Merge pull request #2109

97c2e449 wallet2+API: use separate callbacks for lightwallets (Jaquee)
d9261867 walletAPI: correct confirmations in txHistory for unsynced wallets (Jaquee)
9442b043 walletAPI: lightwallet exceptions (Jaquee)
fc922934 walletAPI: add lightwallet login() and importWalletRequest() (Jaquee)
79207743 walletAPI: init() lightwallet and SSL support (Jaquee)
dde5a1fc walletAPI: add tx unlock_time (Jaquee)
bba5cbed wallet2: remove obsolete get_num_rct_outputs() call from create_transactions_2 (Jaquee)
7a482f30 wallet2: create_transactions_2 lightwallet support (Jaquee)
ce61b818 wallet2: get_outs lightwallet support (Jaquee)
1197cb71 wallet2: commit_tx() lightwallet support (Jaquee)
43b57804 wallet2: refactor is_tx_spendtime_unlocked() (Jaquee)
32e2b003 wallet2: add lightwallet exceptions to common functions (Jaquee)
2e692fc0 wallet2: refresh() lightwallet support (Jaquee)
f44d156c my/openmonero API functions (Jaquee)
288d3c75 wallet2: add remove_obsolete_pool_txs() (Jaquee)
2c6aad7e wallet2: add on_pool_tx_removed callback (Jaquee)
ff7c30aa wallet2: light wallet member variables (Jaquee)
e2a276cb wallet2: add ssl option to init() (Jaquee)
a13540be add string_tools::validate_hex() (Jaquee)
fd773d88 refactor cryptonote_basic::add_tx_pub_key_to_extra (Jaquee)
8bfa6c2d lightwallet rpc server commands (Jaquee)
76961ddc Serializer: string to integer conversion for MyMonero compatibility (Jaquee)
1cf940f2 epee http_client SSL support (Jaquee)
eec10137 CMakeLists.txt - Add openssl include dir (Jaquee)

CMakeLists.txt

@@ -326,7 +326,7 @@ if (UNIX AND NOT APPLE)
   find_package(Threads)
 endif()
 
-# Handle OpenSSL, used for sha256sum on binary updates
+# Handle OpenSSL, used for sha256sum on binary updates and light wallet ssl http
 if (APPLE AND NOT IOS)
   if (NOT OpenSSL_DIR)
       EXECUTE_PROCESS(COMMAND brew --prefix openssl
@@ -337,6 +337,8 @@ if (APPLE AND NOT IOS)
 endif()
 
 find_package(OpenSSL REQUIRED)
+message(STATUS "Using OpenSSL include dir at ${OPENSSL_INCLUDE_DIR}")
+include_directories(${OPENSSL_INCLUDE_DIR})
 if(STATIC AND NOT IOS)
   if(UNIX)
     set(OPENSSL_LIBRARIES "${OPENSSL_LIBRARIES};${CMAKE_DL_LIBS};${CMAKE_THREAD_LIBS_INIT}")

contrib/epee/include/net/http_client.h

@@ -274,6 +274,7 @@ using namespace std;
 			chunked_state m_chunked_state;
 			std::string m_chunked_cache;
 			critical_section m_lock;
+			bool m_ssl;
 
 		public:
 			explicit http_simple_client()
@@ -291,33 +292,35 @@ using namespace std;
 				, m_chunked_state()
 				, m_chunked_cache()
 				, m_lock()
+				, m_ssl(false)
 			{}
 
 			const std::string &get_host() const { return m_host_buff; };
 			const std::string &get_port() const { return m_port; };
 
-			bool set_server(const std::string& address, boost::optional<login> user)
+			bool set_server(const std::string& address, boost::optional<login> user, bool ssl = false)
 			{
 				http::url_content parsed{};
 				const bool r = parse_url(address, parsed);
 				CHECK_AND_ASSERT_MES(r, false, "failed to parse url: " << address);
-				set_server(std::move(parsed.host), std::to_string(parsed.port), std::move(user));
+				set_server(std::move(parsed.host), std::to_string(parsed.port), std::move(user), ssl);
 				return true;
 			}
 
-			void set_server(std::string host, std::string port, boost::optional<login> user)
+			void set_server(std::string host, std::string port, boost::optional<login> user, bool ssl = false)
 			{
 				CRITICAL_REGION_LOCAL(m_lock);
 				disconnect();
 				m_host_buff = std::move(host);
 				m_port = std::move(port);
                                 m_auth = user ? http_client_auth{std::move(*user)} : http_client_auth{};
+				m_ssl = ssl;
 			}
 
       bool connect(std::chrono::milliseconds timeout)
       {
         CRITICAL_REGION_LOCAL(m_lock);
-        return m_net_client.connect(m_host_buff, m_port, timeout);
+        return m_net_client.connect(m_host_buff, m_port, timeout, m_ssl);
       }
 			//---------------------------------------------------------------------------
 			bool disconnect()
@@ -392,7 +395,6 @@ using namespace std;
 						res = m_net_client.send(body, timeout);
 					CHECK_AND_ASSERT_MES(res, false, "HTTP_CLIENT: Failed to SEND");
 
-
 					m_response_info.clear();
 					m_state = reciev_machine_state_header;
 					if (!handle_reciev(timeout))

contrib/epee/include/net/net_helper.h

@@ -37,6 +37,7 @@
 #include <ostream>
 #include <string>
 #include <boost/asio.hpp>
+#include <boost/asio/ssl.hpp>
 #include <boost/asio/steady_timer.hpp>
 #include <boost/preprocessor/selection/min.hpp>
 #include <boost/lambda/bind.hpp>
@@ -85,11 +86,13 @@ namespace net_utils
 		
 	public:
 		inline
-			blocked_mode_client():m_socket(m_io_service), 
-                            m_initialized(false), 
+			blocked_mode_client():m_initialized(false), 
                             m_connected(false), 
                             m_deadline(m_io_service), 
-                            m_shutdowned(0)
+                            m_shutdowned(0),
+                            m_ssl(false),
+                            m_ctx(boost::asio::ssl::context::sslv23),
+                            m_ssl_socket(m_io_service,m_ctx)
 		{
 			
 			
@@ -113,18 +116,25 @@ namespace net_utils
 		}
 
     inline
-      bool connect(const std::string& addr, int port, std::chrono::milliseconds timeout, const std::string& bind_ip = "0.0.0.0")
+      bool connect(const std::string& addr, int port, std::chrono::milliseconds timeout, bool ssl = false, const std::string& bind_ip = "0.0.0.0")
     {
-      return connect(addr, std::to_string(port), timeout, bind_ip);
+      return connect(addr, std::to_string(port), timeout, ssl, bind_ip);
     }
 
     inline
-			bool connect(const std::string& addr, const std::string& port, std::chrono::milliseconds timeout, const std::string& bind_ip = "0.0.0.0")
+			bool connect(const std::string& addr, const std::string& port, std::chrono::milliseconds timeout, bool ssl = false, const std::string& bind_ip = "0.0.0.0")
 		{
       m_connected = false;
+      m_ssl = ssl;
 			try
 			{
-				m_socket.close();
+				m_ssl_socket.next_layer().close();
+
+				// Set SSL options
+				// disable sslv2
+				m_ctx.set_options(boost::asio::ssl::context::default_workarounds | boost::asio::ssl::context::no_sslv2);
+				m_ctx.set_default_verify_paths();
+
 				// Get a list of endpoints corresponding to the server name.
 				
 
@@ -147,11 +157,11 @@ namespace net_utils
 				boost::asio::ip::tcp::endpoint remote_endpoint(*iterator);
 
 
-				m_socket.open(remote_endpoint.protocol());
+				m_ssl_socket.next_layer().open(remote_endpoint.protocol());
 				if(bind_ip != "0.0.0.0" && bind_ip != "0" && bind_ip != "" )
 				{
 					boost::asio::ip::tcp::endpoint local_endpoint(boost::asio::ip::address::from_string(addr.c_str()), 0);
-					m_socket.bind(local_endpoint);
+					m_ssl_socket.next_layer().bind(local_endpoint);
 				}
 
 				
@@ -160,17 +170,24 @@ namespace net_utils
 
 				boost::system::error_code ec = boost::asio::error::would_block;
 
-				//m_socket.connect(remote_endpoint);
-				m_socket.async_connect(remote_endpoint, boost::lambda::var(ec) = boost::lambda::_1);
+				m_ssl_socket.next_layer().async_connect(remote_endpoint, boost::lambda::var(ec) = boost::lambda::_1);
 				while (ec == boost::asio::error::would_block)
 				{	
 					m_io_service.run_one(); 
 				}
 				
-				if (!ec && m_socket.is_open())
+				if (!ec && m_ssl_socket.next_layer().is_open())
 				{
 					m_connected = true;
 					m_deadline.expires_at(std::chrono::steady_clock::time_point::max());
+					// SSL Options
+					if(m_ssl) {
+						// Disable verification of host certificate
+						m_ssl_socket.set_verify_mode(boost::asio::ssl::verify_peer);
+						// Handshake
+						m_ssl_socket.next_layer().set_option(boost::asio::ip::tcp::no_delay(true));
+						m_ssl_socket.handshake(boost::asio::ssl::stream_base::client);
+					}
 					return true;
 				}else
 				{
@@ -193,7 +210,6 @@ namespace net_utils
 			return true;
 		}
 
-
 		inline 
 		bool disconnect()
 		{
@@ -202,8 +218,9 @@ namespace net_utils
 				if(m_connected)
 				{
 					m_connected = false;
-					m_socket.shutdown(boost::asio::ip::tcp::socket::shutdown_both);
-					
+					if(m_ssl)
+						shutdown_ssl();
+					m_ssl_socket.next_layer().shutdown(boost::asio::ip::tcp::socket::shutdown_both);
 				}
 			}
 			
@@ -240,7 +257,7 @@ namespace net_utils
 				// object is used as a callback and will update the ec variable when the
 				// operation completes. The blocking_udp_client.cpp example shows how you
 				// can use boost::bind rather than boost::lambda.
-				boost::asio::async_write(m_socket, boost::asio::buffer(buff), boost::lambda::var(ec) = boost::lambda::_1);
+				async_write(buff.c_str(), buff.size(), ec);
 
 				// Block until the asynchronous operation has completed.
 				while (ec == boost::asio::error::would_block)
@@ -302,9 +319,7 @@ namespace net_utils
 				*/
 				boost::system::error_code ec;
 
-				size_t writen = m_socket.write_some(boost::asio::buffer(data, sz), ec);
-				
-
+				size_t writen = write(data, sz, ec);
 
 				if (!writen || ec)
 				{
@@ -334,10 +349,7 @@ namespace net_utils
 
 		bool is_connected()
 		{
-			return m_connected && m_socket.is_open();
-			//TRY_ENTRY()
-			//return m_socket.is_open();
-			//CATCH_ENTRY_L0("is_connected", false)
+			return m_connected && m_ssl_socket.next_layer().is_open();
 		}
 
 		inline 
@@ -369,8 +381,8 @@ namespace net_utils
 				handler_obj hndlr(ec, bytes_transfered);
 
 				char local_buff[10000] = {0};
-				//m_socket.async_read_some(boost::asio::buffer(local_buff, sizeof(local_buff)), hndlr);
-				boost::asio::async_read(m_socket, boost::asio::buffer(local_buff, sizeof(local_buff)), boost::asio::transfer_at_least(1), hndlr);
+				
+				async_read(local_buff, boost::asio::transfer_at_least(1), hndlr);
 
 				// Block until the asynchronous operation has completed.
 				while (ec == boost::asio::error::would_block && !boost::interprocess::ipcdetail::atomic_read32(&m_shutdowned))
@@ -451,10 +463,8 @@ namespace net_utils
 
 				
 				handler_obj hndlr(ec, bytes_transfered);
-
-				//char local_buff[10000] = {0};
-				boost::asio::async_read(m_socket, boost::asio::buffer((char*)buff.data(), buff.size()), boost::asio::transfer_at_least(buff.size()), hndlr);
-
+				async_read((char*)buff.data(), boost::asio::transfer_at_least(buff.size()), hndlr);
+				
 				// Block until the asynchronous operation has completed.
 				while (ec == boost::asio::error::would_block && !boost::interprocess::ipcdetail::atomic_read32(&m_shutdowned))
 				{
@@ -500,10 +510,18 @@ namespace net_utils
 		bool shutdown()
 		{
 			m_deadline.cancel();
-			boost::system::error_code ignored_ec;
-			m_socket.cancel(ignored_ec);
-			m_socket.shutdown(boost::asio::ip::tcp::socket::shutdown_both, ignored_ec);
-			m_socket.close(ignored_ec);
+			boost::system::error_code ec;
+			if(m_ssl)
+				shutdown_ssl();
+			m_ssl_socket.next_layer().cancel(ec);
+			if(ec)
+				MDEBUG("Problems at cancel: " << ec.message());
+			m_ssl_socket.next_layer().shutdown(boost::asio::ip::tcp::socket::shutdown_both, ec);
+			if(ec)
+				MDEBUG("Problems at shutdown: " << ec.message());
+			m_ssl_socket.next_layer().close(ec);
+			if(ec)
+				MDEBUG("Problems at close: " << ec.message());
 			boost::interprocess::ipcdetail::atomic_write32(&m_shutdowned, 1);
       m_connected = false;
 			return true;
@@ -520,7 +538,7 @@ namespace net_utils
 
 		boost::asio::ip::tcp::socket& get_socket()
 		{
-			return m_socket;
+			return m_ssl_socket.next_layer();
 		}
 		
 	private:
@@ -537,7 +555,7 @@ namespace net_utils
 				// connect(), read_line() or write_line() functions to return.
 				LOG_PRINT_L3("Timed out socket");
         m_connected = false;
-				m_socket.close();
+				m_ssl_socket.next_layer().close();
 
 				// There is no longer an active deadline. The expiry is set to positive
 				// infinity so that the actor takes no action until a new deadline is set.
@@ -547,12 +565,54 @@ namespace net_utils
 			// Put the actor back to sleep.
 			m_deadline.async_wait(boost::bind(&blocked_mode_client::check_deadline, this));
 		}
-		
 
+		void shutdown_ssl() {
+			// ssl socket shutdown blocks if server doesn't respond. We close after 2 secs
+			boost::system::error_code ec = boost::asio::error::would_block;
+			m_deadline.expires_from_now(std::chrono::milliseconds(2000));
+			m_ssl_socket.async_shutdown(boost::lambda::var(ec) = boost::lambda::_1);
+			while (ec == boost::asio::error::would_block)
+			{
+				m_io_service.run_one();
+			}
+			// Ignore "short read" error
+			if (ec.category() == boost::asio::error::get_ssl_category() && ec.value() != ERR_PACK(ERR_LIB_SSL, 0, SSL_R_SHORT_READ))
+				MDEBUG("Problems at ssl shutdown: " << ec.message());
+		}
+		
+	protected:
+		bool write(const void* data, size_t sz, boost::system::error_code& ec)
+		{
+			bool success;
+			if(m_ssl)
+				success = boost::asio::write(m_ssl_socket, boost::asio::buffer(data, sz), ec);
+			else
+				success = boost::asio::write(m_ssl_socket.next_layer(), boost::asio::buffer(data, sz), ec);
+			return success;
+		}
+		
+		void async_write(const void* data, size_t sz, boost::system::error_code& ec) 
+		{
+			if(m_ssl)
+				boost::asio::async_write(m_ssl_socket, boost::asio::buffer(data, sz), boost::lambda::var(ec) = boost::lambda::_1);
+			else
+				boost::asio::async_write(m_ssl_socket.next_layer(), boost::asio::buffer(data, sz), boost::lambda::var(ec) = boost::lambda::_1);
+		}
+		
+		void async_read(char* buff, boost::asio::detail::transfer_at_least_t transfer_at_least, handler_obj& hndlr)
+		{
+			if(!m_ssl)
+				boost::asio::async_read(m_ssl_socket.next_layer(), boost::asio::buffer(buff, sizeof(buff)), transfer_at_least, hndlr);
+			else
+				boost::asio::async_read(m_ssl_socket, boost::asio::buffer(buff, sizeof(buff)), transfer_at_least, hndlr);
+			
+		}
 		
 	protected:
 		boost::asio::io_service m_io_service;
-		boost::asio::ip::tcp::socket m_socket;
+		boost::asio::ssl::context m_ctx;
+		boost::asio::ssl::stream<boost::asio::ip::tcp::socket> m_ssl_socket;
+		bool m_ssl;
 		bool m_initialized;
 		bool m_connected;
 		boost::asio::steady_timer m_deadline;
@@ -618,8 +678,8 @@ namespace net_utils
 				
 				boost::system::error_code ec;
 
-				size_t writen = m_socket.write_some(boost::asio::buffer(data, sz), ec);
-
+				size_t writen = write(data, sz, ec);
+				
 				if (!writen || ec)
 				{
 					LOG_PRINT_L3("Problems at write: " << ec.message());
@@ -660,7 +720,7 @@ namespace net_utils
 				// asynchronous operations are cancelled. This allows the blocked
 				// connect(), read_line() or write_line() functions to return.
 				LOG_PRINT_L3("Timed out socket");
-				m_socket.close();
+				m_ssl_socket.next_layer().close();
 
 				// There is no longer an active deadline. The expiry is set to positive
 				// infinity so that the actor takes no action until a new deadline is set.

contrib/epee/include/storages/http_abstract_invoke.h

@@ -44,8 +44,11 @@ namespace epee
       if(!serialization::store_t_to_json(out_struct, req_param))
         return false;
 
+      http::fields_list additional_params;
+      additional_params.push_back(std::make_pair("Content-Type","application/json; charset=utf-8"));
+
       const http::http_response_info* pri = NULL;
-      if(!transport.invoke(uri, method, req_param, timeout, std::addressof(pri)))
+      if(!transport.invoke(uri, method, req_param, timeout, std::addressof(pri), std::move(additional_params)))
       {
         LOG_PRINT_L1("Failed to invoke http request to  " << uri);
         return false;

contrib/epee/include/storages/portable_storage_val_converters.h

@@ -28,6 +28,8 @@
 
 #pragma once
 
+#include <regex>
+
 #include "misc_language.h"
 #include "portable_storage_base.h"
 #include "warnings.h"
@@ -131,6 +133,31 @@ POP_WARNINGS
       }
     };
 
+    // For MyMonero/OpenMonero backend compatibility
+    // MyMonero backend sends amount, fees and timestamp values as strings.
+    // Until MM backend is updated, this is needed for compatibility between OpenMonero and MyMonero. 
+    template<>
+    struct convert_to_integral<std::string, uint64_t, false>
+    {
+      static void convert(const std::string& from, uint64_t& to)
+      {
+        MTRACE("Converting std::string to uint64_t. Source: " << from);
+        // String only contains digits
+        if(std::all_of(from.begin(), from.end(), ::isdigit))
+          to = boost::lexical_cast<uint64_t>(from);
+        // MyMonero ISO 8061 timestamp (2017-05-06T16:27:06Z)
+        else if (std::regex_match (from, std::regex("\\d{4}-[01]\\d-[0-3]\\dT[0-2]\\d:[0-5]\\d:[0-5]\\dZ")))
+        {
+          // Convert to unix timestamp
+          std::tm tm = {};
+          std::istringstream ss(from);
+          if (ss >> std::get_time(&tm, "%Y-%m-%dT%H:%M:%S"))
+            to = std::mktime(&tm);
+        } else
+          ASSERT_AND_THROW_WRONG_CONVERSION();
+      }
+    };
+
     template<class from_type, class to_type>
     struct is_convertable: std::integral_constant<bool,
                             std::is_integral<to_type>::value &&

contrib/epee/include/string_tools.h

@@ -39,6 +39,7 @@
 #include <cstdlib>
 #include <string>
 #include <type_traits>
+#include <regex>
 #include <boost/uuid/uuid.hpp>
 #include <boost/uuid/uuid_io.hpp>
 #include <boost/lexical_cast.hpp>
@@ -349,6 +350,11 @@ POP_WARNINGS
     s = *(t_pod_type*)bin_buff.data();
     return true;
   }
+	//----------------------------------------------------------------------------
+	inline bool validate_hex(uint64_t length, const std::string& str)
+	{
+		return std::regex_match(str, std::regex("'^[0-9abcdefABCDEF]+$'")) && str.size() == length;
+	}
   //----------------------------------------------------------------------------
 	inline std::string get_extension(const std::string& str)
 	{

src/cryptonote_basic/cryptonote_format_utils.cpp

@@ -324,9 +324,19 @@ namespace cryptonote
   //---------------------------------------------------------------
   bool add_tx_pub_key_to_extra(transaction& tx, const crypto::public_key& tx_pub_key)
   {
-    tx.extra.resize(tx.extra.size() + 1 + sizeof(crypto::public_key));
-    tx.extra[tx.extra.size() - 1 - sizeof(crypto::public_key)] = TX_EXTRA_TAG_PUBKEY;
-    *reinterpret_cast<crypto::public_key*>(&tx.extra[tx.extra.size() - sizeof(crypto::public_key)]) = tx_pub_key;
+    return add_tx_pub_key_to_extra(tx.extra, tx_pub_key);
+  }
+  //---------------------------------------------------------------
+  bool add_tx_pub_key_to_extra(transaction_prefix& tx, const crypto::public_key& tx_pub_key)
+  {
+    return add_tx_pub_key_to_extra(tx.extra, tx_pub_key);
+  }
+  //---------------------------------------------------------------
+  bool add_tx_pub_key_to_extra(std::vector<uint8_t>& tx_extra, const crypto::public_key& tx_pub_key)
+  {
+    tx_extra.resize(tx_extra.size() + 1 + sizeof(crypto::public_key));
+    tx_extra[tx_extra.size() - 1 - sizeof(crypto::public_key)] = TX_EXTRA_TAG_PUBKEY;
+    *reinterpret_cast<crypto::public_key*>(&tx_extra[tx_extra.size() - sizeof(crypto::public_key)]) = tx_pub_key;
     return true;
   }
   //---------------------------------------------------------------

src/cryptonote_basic/cryptonote_format_utils.h

@@ -65,6 +65,8 @@ namespace cryptonote
   crypto::public_key get_tx_pub_key_from_extra(const transaction_prefix& tx, size_t pk_index = 0);
   crypto::public_key get_tx_pub_key_from_extra(const transaction& tx, size_t pk_index = 0);
   bool add_tx_pub_key_to_extra(transaction& tx, const crypto::public_key& tx_pub_key);
+  bool add_tx_pub_key_to_extra(transaction_prefix& tx, const crypto::public_key& tx_pub_key);
+  bool add_tx_pub_key_to_extra(std::vector<uint8_t>& tx_extra, const crypto::public_key& tx_pub_key);
   std::vector<crypto::public_key> get_additional_tx_pub_keys_from_extra(const std::vector<uint8_t>& tx_extra);
   std::vector<crypto::public_key> get_additional_tx_pub_keys_from_extra(const transaction_prefix& tx);
   bool add_additional_tx_pub_keys_to_extra(std::vector<uint8_t>& tx_extra, const std::vector<crypto::public_key>& additional_pub_keys);

src/rpc/core_rpc_server_commands_defs.h

@@ -49,7 +49,7 @@ namespace cryptonote
 // advance which version they will stop working with
 // Don't go over 32767 for any of these
 #define CORE_RPC_VERSION_MAJOR 1
-#define CORE_RPC_VERSION_MINOR 14
+#define CORE_RPC_VERSION_MINOR 15
 #define MAKE_CORE_RPC_VERSION(major,minor) (((major)<<16)|(minor))
 #define CORE_RPC_VERSION MAKE_CORE_RPC_VERSION(CORE_RPC_VERSION_MAJOR, CORE_RPC_VERSION_MINOR)
 
@@ -194,6 +194,358 @@ namespace cryptonote
     };
   };
 
+  //-----------------------------------------------
+  struct COMMAND_RPC_GET_ADDRESS_TXS
+  {
+      struct request
+      {
+        std::string address;
+        std::string view_key;
+
+        BEGIN_KV_SERIALIZE_MAP()
+          KV_SERIALIZE(address)
+          KV_SERIALIZE(view_key)
+        END_KV_SERIALIZE_MAP()
+      };
+      
+      struct spent_output {
+        uint64_t amount;
+        std::string key_image;
+        std::string tx_pub_key;
+        uint64_t out_index;
+        uint32_t mixin;
+        
+        
+        BEGIN_KV_SERIALIZE_MAP()
+          KV_SERIALIZE(amount)
+          KV_SERIALIZE(key_image)
+          KV_SERIALIZE(tx_pub_key)
+          KV_SERIALIZE(out_index)
+          KV_SERIALIZE(mixin)
+        END_KV_SERIALIZE_MAP()
+      };
+      
+      struct transaction
+      {
+        uint64_t id;
+        std::string hash;
+        uint64_t timestamp;
+        uint64_t total_received;
+        uint64_t total_sent;
+        uint64_t unlock_time;
+        uint64_t height;
+        std::list<spent_output> spent_outputs;
+        std::string payment_id;
+        bool coinbase;
+        bool mempool;
+        uint32_t mixin;
+
+        BEGIN_KV_SERIALIZE_MAP()
+          KV_SERIALIZE(id)
+          KV_SERIALIZE(hash)
+          KV_SERIALIZE(timestamp)
+          KV_SERIALIZE(total_received)
+          KV_SERIALIZE(total_sent)
+          KV_SERIALIZE(unlock_time)
+          KV_SERIALIZE(height)
+          KV_SERIALIZE(spent_outputs)
+          KV_SERIALIZE(payment_id)
+          KV_SERIALIZE(coinbase)
+          KV_SERIALIZE(mempool)
+          KV_SERIALIZE(mixin)
+        END_KV_SERIALIZE_MAP()
+      };
+      
+      
+      struct response
+      {
+        //std::list<std::string> txs_as_json;
+        uint64_t total_received;
+        uint64_t total_received_unlocked = 0; // OpenMonero only
+        uint64_t scanned_height;
+        std::list<transaction> transactions;
+        uint64_t blockchain_height;
+        uint64_t scanned_block_height;
+        std::string status;
+        BEGIN_KV_SERIALIZE_MAP()
+          KV_SERIALIZE(total_received)
+          KV_SERIALIZE(total_received_unlocked)
+          KV_SERIALIZE(scanned_height)
+          KV_SERIALIZE(transactions)
+          KV_SERIALIZE(blockchain_height)
+          KV_SERIALIZE(scanned_block_height)
+          KV_SERIALIZE(status)
+        END_KV_SERIALIZE_MAP()
+      };
+  };
+  
+  //-----------------------------------------------
+  struct COMMAND_RPC_GET_ADDRESS_INFO
+  {
+      struct request
+      {
+        std::string address;
+        std::string view_key;
+
+        BEGIN_KV_SERIALIZE_MAP()
+          KV_SERIALIZE(address)
+          KV_SERIALIZE(view_key)
+        END_KV_SERIALIZE_MAP()
+      };
+      
+      struct spent_output 
+      {
+        uint64_t amount;
+        std::string key_image;
+        std::string tx_pub_key;
+        uint64_t  out_index;
+        uint32_t  mixin;
+        
+        BEGIN_KV_SERIALIZE_MAP()
+          KV_SERIALIZE(amount)
+          KV_SERIALIZE(key_image)
+          KV_SERIALIZE(tx_pub_key)
+          KV_SERIALIZE(out_index)
+          KV_SERIALIZE(mixin)
+        END_KV_SERIALIZE_MAP()
+      };
+  
+      
+      
+      struct response
+      { 
+        uint64_t locked_funds;
+        uint64_t total_received;
+        uint64_t total_sent;
+        uint64_t scanned_height;
+        uint64_t scanned_block_height;
+        uint64_t start_height;
+        uint64_t transaction_height;
+        uint64_t blockchain_height;
+        std::list<spent_output> spent_outputs;
+        BEGIN_KV_SERIALIZE_MAP()
+          KV_SERIALIZE(locked_funds)
+          KV_SERIALIZE(total_received)
+          KV_SERIALIZE(total_sent)        
+          KV_SERIALIZE(scanned_height)
+          KV_SERIALIZE(scanned_block_height)
+          KV_SERIALIZE(start_height)
+          KV_SERIALIZE(transaction_height)
+          KV_SERIALIZE(blockchain_height)
+          KV_SERIALIZE(spent_outputs)
+        END_KV_SERIALIZE_MAP()
+      };
+  };
+  
+  //-----------------------------------------------
+  struct COMMAND_RPC_GET_UNSPENT_OUTS
+  {
+      struct request
+      {
+        std::string amount;
+        std::string address;
+        std::string view_key;
+        // OpenMonero specific
+        uint64_t mixin;
+        bool use_dust;
+        std::string dust_threshold;
+
+        BEGIN_KV_SERIALIZE_MAP()
+          KV_SERIALIZE(amount)
+          KV_SERIALIZE(address)
+          KV_SERIALIZE(view_key)
+          KV_SERIALIZE(mixin)
+          KV_SERIALIZE(use_dust)
+          KV_SERIALIZE(dust_threshold)
+        END_KV_SERIALIZE_MAP()
+      };
+    
+      
+      struct output {
+        uint64_t amount;
+        std::string public_key;
+        uint64_t  index;
+        uint64_t global_index;
+        std::string rct;
+        std::string tx_hash;
+        std::string tx_pub_key;
+        std::string tx_prefix_hash;
+        std::vector<std::string> spend_key_images;
+        uint64_t timestamp;
+        uint64_t height;                
+
+
+        BEGIN_KV_SERIALIZE_MAP()
+          KV_SERIALIZE(amount)
+          KV_SERIALIZE(public_key)
+          KV_SERIALIZE(index)
+          KV_SERIALIZE(global_index)
+          KV_SERIALIZE(rct)
+          KV_SERIALIZE(tx_hash)
+          KV_SERIALIZE(tx_pub_key)
+          KV_SERIALIZE(tx_prefix_hash)
+          KV_SERIALIZE(spend_key_images)  
+          KV_SERIALIZE(timestamp)  
+          KV_SERIALIZE(height)                                    
+        END_KV_SERIALIZE_MAP()
+      };
+      
+      struct response
+      {
+        uint64_t amount;
+        std::list<output> outputs;
+        uint64_t per_kb_fee;
+        std::string status;
+        std::string reason;
+        BEGIN_KV_SERIALIZE_MAP()
+          KV_SERIALIZE(amount)
+          KV_SERIALIZE(outputs)
+          KV_SERIALIZE(per_kb_fee)
+          KV_SERIALIZE(status)
+          KV_SERIALIZE(reason)
+        END_KV_SERIALIZE_MAP()
+      };
+  };
+  
+  //-----------------------------------------------
+  struct COMMAND_RPC_GET_RANDOM_OUTS
+  {
+      struct request
+      {
+        std::vector<std::string> amounts;
+        uint32_t count;
+
+        BEGIN_KV_SERIALIZE_MAP()
+          KV_SERIALIZE(amounts)
+          KV_SERIALIZE(count)
+        END_KV_SERIALIZE_MAP()
+      };
+    
+      
+      struct output {
+        std::string public_key;
+        uint64_t global_index;
+        std::string rct; // 64+64+64 characters long (<rct commit> + <encrypted mask> + <rct amount>)
+
+        BEGIN_KV_SERIALIZE_MAP()
+          KV_SERIALIZE(public_key)
+          KV_SERIALIZE(global_index)
+          KV_SERIALIZE(rct)                                 
+        END_KV_SERIALIZE_MAP()
+      };
+      
+      struct amount_out {
+        uint64_t amount;
+        std::vector<output> outputs;
+        BEGIN_KV_SERIALIZE_MAP()
+          KV_SERIALIZE(amount)
+          KV_SERIALIZE(outputs)                                
+        END_KV_SERIALIZE_MAP()
+        
+      };
+      
+      struct response
+      {
+        std::vector<amount_out> amount_outs;
+        std::string Error;
+        BEGIN_KV_SERIALIZE_MAP()
+          KV_SERIALIZE(amount_outs)
+          KV_SERIALIZE(Error)
+        END_KV_SERIALIZE_MAP()
+      };
+  };
+  //-----------------------------------------------
+  struct COMMAND_RPC_SUBMIT_RAW_TX
+  {
+      struct request
+      {
+        std::string address;
+        std::string view_key;
+        std::string tx;
+
+        BEGIN_KV_SERIALIZE_MAP()
+          KV_SERIALIZE(address)
+          KV_SERIALIZE(view_key)
+          KV_SERIALIZE(tx)  
+        END_KV_SERIALIZE_MAP()
+      };
+    
+      
+      struct response
+      {
+        std::string status;
+        std::string error;
+        
+        BEGIN_KV_SERIALIZE_MAP()
+          KV_SERIALIZE(status)
+          KV_SERIALIZE(error)
+        END_KV_SERIALIZE_MAP()
+      };
+  };
+  //-----------------------------------------------
+  struct COMMAND_RPC_LOGIN
+  {
+      struct request
+      {
+        std::string address;
+        std::string view_key;
+        bool create_account;
+
+        BEGIN_KV_SERIALIZE_MAP()
+          KV_SERIALIZE(address)
+          KV_SERIALIZE(view_key) 
+          KV_SERIALIZE(create_account) 
+        END_KV_SERIALIZE_MAP()
+      };
+    
+      
+      struct response
+      {
+        std::string status;
+        std::string reason;
+        bool new_address;
+        
+        BEGIN_KV_SERIALIZE_MAP()
+          KV_SERIALIZE(status)
+          KV_SERIALIZE(reason)
+          KV_SERIALIZE(new_address)
+        END_KV_SERIALIZE_MAP()
+      };
+  };
+  //-----------------------------------------------
+  struct COMMAND_RPC_IMPORT_WALLET_REQUEST
+  {
+      struct request
+      {
+        std::string address;
+        std::string view_key;
+        
+        BEGIN_KV_SERIALIZE_MAP()
+          KV_SERIALIZE(address)
+          KV_SERIALIZE(view_key)
+        END_KV_SERIALIZE_MAP()
+      };
+    
+      
+      struct response
+      {
+        std::string payment_id;
+        uint64_t import_fee;
+        bool new_request;
+        bool request_fulfilled;
+        std::string payment_address;
+        std::string status;
+        
+        BEGIN_KV_SERIALIZE_MAP()
+          KV_SERIALIZE(payment_id)
+          KV_SERIALIZE(import_fee)
+          KV_SERIALIZE(new_request)
+          KV_SERIALIZE(request_fulfilled)
+          KV_SERIALIZE(payment_address)
+          KV_SERIALIZE(status)            
+        END_KV_SERIALIZE_MAP()
+      };
+  };
   //-----------------------------------------------
   struct COMMAND_RPC_GET_TRANSACTIONS
   {

src/wallet/api/transaction_history.cpp

@@ -134,14 +134,10 @@ void TransactionHistoryImpl::refresh()
         ti->m_subaddrAccount = pd.m_subaddr_index.major;
         ti->m_label     = m_wallet->m_wallet->get_subaddress_label(pd.m_subaddr_index);
         ti->m_timestamp = pd.m_timestamp;
-        ti->m_confirmations = wallet_height - pd.m_block_height;
+        ti->m_confirmations = (wallet_height > pd.m_block_height) ? wallet_height - pd.m_block_height : 0;
         ti->m_unlock_time = pd.m_unlock_time;
         m_history.push_back(ti);
 
-        /* output.insert(std::make_pair(pd.m_block_height, std::make_pair(true, (boost::format("%20.20s %s %s %s")
-                                                                                 % print_money(pd.m_amount)
-                                                                                 % string_tools::pod_to_hex(pd.m_tx_hash)
-                                                                                 % payment_id % "-").str()))); */
     }
 
     // confirmed output transactions
@@ -181,7 +177,7 @@ void TransactionHistoryImpl::refresh()
         ti->m_subaddrAccount = pd.m_subaddr_account;
         ti->m_label = pd.m_subaddr_indices.size() == 1 ? m_wallet->m_wallet->get_subaddress_label({pd.m_subaddr_account, *pd.m_subaddr_indices.begin()}) : "";
         ti->m_timestamp = pd.m_timestamp;
-        ti->m_confirmations = wallet_height - pd.m_block_height;
+        ti->m_confirmations = (wallet_height > pd.m_block_height) ? wallet_height - pd.m_block_height : 0;
 
         // single output transaction might contain multiple transfers
         for (const auto &d: pd.m_dests) {

src/wallet/api/wallet.cpp

@@ -155,6 +155,38 @@ struct Wallet2CallbackImpl : public tools::i_wallet2_callback
         // TODO;
     }
 
+    // Light wallet callbacks
+    virtual void on_lw_new_block(uint64_t height)
+    {
+      if (m_listener) {
+        m_listener->newBlock(height);
+      }
+    }
+
+    virtual void on_lw_money_received(uint64_t height, const crypto::hash &txid, uint64_t amount)
+    {
+      if (m_listener) {
+        std::string tx_hash =  epee::string_tools::pod_to_hex(txid);
+        m_listener->moneyReceived(tx_hash, amount);
+      }
+    }
+
+    virtual void on_lw_unconfirmed_money_received(uint64_t height, const crypto::hash &txid, uint64_t amount)
+    {
+      if (m_listener) {
+        std::string tx_hash =  epee::string_tools::pod_to_hex(txid);
+        m_listener->unconfirmedMoneyReceived(tx_hash, amount);
+      }
+    }
+
+    virtual void on_lw_money_spent(uint64_t height, const crypto::hash &txid, uint64_t amount)
+    {
+      if (m_listener) {
+        std::string tx_hash =  epee::string_tools::pod_to_hex(txid);
+        m_listener->moneySpent(tx_hash, amount);
+      }
+    }
+
     WalletListener * m_listener;
     WalletImpl     * m_wallet;
 };
@@ -703,12 +735,45 @@ string WalletImpl::keysFilename() const
     return m_wallet->get_keys_file();
 }
 
-bool WalletImpl::init(const std::string &daemon_address, uint64_t upper_transaction_size_limit, const std::string &daemon_username, const std::string &daemon_password)
+bool WalletImpl::init(const std::string &daemon_address, uint64_t upper_transaction_size_limit, const std::string &daemon_username, const std::string &daemon_password, bool use_ssl, bool lightWallet)
 {
     clearStatus();
+    m_wallet->set_light_wallet(lightWallet);
     if(daemon_username != "")
         m_daemon_login.emplace(daemon_username, daemon_password);
-    return doInit(daemon_address, upper_transaction_size_limit);
+    return doInit(daemon_address, upper_transaction_size_limit, use_ssl);
+}
+
+bool WalletImpl::lightWalletLogin(bool &isNewWallet) const
+{
+  return m_wallet->light_wallet_login(isNewWallet);
+}
+
+bool WalletImpl::lightWalletImportWalletRequest(std::string &payment_id, uint64_t &fee, bool &new_request, bool &request_fulfilled, std::string &payment_address, std::string &status)
+{
+  try
+  {
+    cryptonote::COMMAND_RPC_IMPORT_WALLET_REQUEST::response response;
+    if(!m_wallet->light_wallet_import_wallet_request(response)){
+      m_errorString = tr("Failed to send import wallet request");
+      m_status = Status_Error;
+      return false;
+    }
+    fee = response.import_fee;
+    payment_id = response.payment_id;
+    new_request = response.new_request;
+    request_fulfilled = response.request_fulfilled;
+    payment_address = response.payment_address;
+    status = response.status;
+  }
+  catch (const std::exception &e)
+  {
+    LOG_ERROR("Error sending import wallet request: " << e.what());
+    m_errorString = e.what();
+    m_status = Status_Error;
+    return false;
+  }
+  return true;
 }
 
 void WalletImpl::setRefreshFromBlockHeight(uint64_t refresh_from_block_height)
@@ -733,6 +798,9 @@ uint64_t WalletImpl::unlockedBalance(uint32_t accountIndex) const
 
 uint64_t WalletImpl::blockChainHeight() const
 {
+    if(m_wallet->light_wallet()) {
+        return m_wallet->get_light_wallet_scanned_block_height();
+    }
     return m_wallet->get_blockchain_current_height();
 }
 uint64_t WalletImpl::approximateBlockChainHeight() const
@@ -741,6 +809,9 @@ uint64_t WalletImpl::approximateBlockChainHeight() const
 }
 uint64_t WalletImpl::daemonBlockChainHeight() const
 {
+    if(m_wallet->light_wallet()) {
+        return m_wallet->get_light_wallet_scanned_block_height();
+    }
     if (!m_is_connected)
         return 0;
     std::string err;
@@ -760,6 +831,9 @@ uint64_t WalletImpl::daemonBlockChainHeight() const
 
 uint64_t WalletImpl::daemonBlockChainTargetHeight() const
 {
+    if(m_wallet->light_wallet()) {
+        return m_wallet->get_light_wallet_blockchain_height();
+    }
     if (!m_is_connected)
         return 0;
     std::string err;
@@ -1348,7 +1422,8 @@ Wallet::ConnectionStatus WalletImpl::connected() const
     m_is_connected = m_wallet->check_connection(&version, DEFAULT_CONNECTION_TIMEOUT_MILLIS);
     if (!m_is_connected)
         return Wallet::ConnectionStatus_Disconnected;
-    if ((version >> 16) != CORE_RPC_VERSION_MAJOR)
+    // Version check is not implemented in light wallets nodes/wallets
+    if (!m_wallet->light_wallet() && (version >> 16) != CORE_RPC_VERSION_MAJOR)
         return Wallet::ConnectionStatus_WrongVersion;
     return Wallet::ConnectionStatus_Connected;
 }
@@ -1411,7 +1486,7 @@ void WalletImpl::doRefresh()
     try {
         // Syncing daemon and refreshing wallet simultaneously is very resource intensive.
         // Disable refresh if wallet is disconnected or daemon isn't synced.
-        if (daemonSynced()) {
+        if (m_wallet->light_wallet() || daemonSynced()) {
             m_wallet->refresh();
             if (!m_synchronized) {
                 m_synchronized = true;
@@ -1476,13 +1551,14 @@ bool WalletImpl::isNewWallet() const
     return !(blockChainHeight() > 1 || m_recoveringFromSeed || m_rebuildWalletCache) && !watchOnly();
 }
 
-bool WalletImpl::doInit(const string &daemon_address, uint64_t upper_transaction_size_limit)
+bool WalletImpl::doInit(const string &daemon_address, uint64_t upper_transaction_size_limit, bool ssl)
 {
-    if (!m_wallet->init(daemon_address, m_daemon_login, upper_transaction_size_limit))
+    if (!m_wallet->init(daemon_address, m_daemon_login, upper_transaction_size_limit, ssl))
        return false;
 
     // in case new wallet, this will force fast-refresh (pulling hashes instead of blocks)
     // If daemon isn't synced a calculated block height will be used instead
+    //TODO: Handle light wallet scenario where block height = 0.
     if (isNewWallet() && daemonSynced()) {
         LOG_PRINT_L2(__FUNCTION__ << ":New Wallet - fast refresh until " << daemonBlockChainHeight());
         m_wallet->set_refresh_from_block_height(daemonBlockChainHeight());

src/wallet/api/wallet.h

@@ -83,7 +83,7 @@ public:
     bool store(const std::string &path);
     std::string filename() const;
     std::string keysFilename() const;
-    bool init(const std::string &daemon_address, uint64_t upper_transaction_size_limit = 0, const std::string &daemon_username = "", const std::string &daemon_password = "");
+    bool init(const std::string &daemon_address, uint64_t upper_transaction_size_limit = 0, const std::string &daemon_username = "", const std::string &daemon_password = "", bool use_ssl = false, bool lightWallet = false);
     bool connectToDaemon();
     ConnectionStatus connected() const;
     void setTrustedDaemon(bool arg);
@@ -143,6 +143,8 @@ public:
     virtual void pauseRefresh();
     virtual bool parse_uri(const std::string &uri, std::string &address, std::string &payment_id, uint64_t &amount, std::string &tx_description, std::string &recipient_name, std::vector<std::string> &unknown_parameters, std::string &error);
     virtual std::string getDefaultDataDir() const;
+    virtual bool lightWalletLogin(bool &isNewWallet) const;
+    virtual bool lightWalletImportWalletRequest(std::string &payment_id, uint64_t &fee, bool &new_request, bool &request_fulfilled, std::string &payment_address, std::string &status);
 
 private:
     void clearStatus() const;
@@ -151,7 +153,7 @@ private:
     bool daemonSynced() const;
     void stopRefresh();
     bool isNewWallet() const;
-    bool doInit(const std::string &daemon_address, uint64_t upper_transaction_size_limit);
+    bool doInit(const std::string &daemon_address, uint64_t upper_transaction_size_limit = 0, bool ssl = false);
 
 private:
     friend class PendingTransactionImpl;

src/wallet/wallet2.cpp

@@ -525,7 +525,7 @@ std::unique_ptr<wallet2> wallet2::make_dummy(const boost::program_options::varia
 }
 
 //----------------------------------------------------------------------------------------------------
-bool wallet2::init(std::string daemon_address, boost::optional<epee::net_utils::http::login> daemon_login, uint64_t upper_transaction_size_limit)
+bool wallet2::init(std::string daemon_address, boost::optional<epee::net_utils::http::login> daemon_login, uint64_t upper_transaction_size_limit, bool ssl)
 {
   m_checkpoints.init_default_checkpoints(m_testnet);
   if(m_http_client.is_connected())
@@ -534,7 +534,10 @@ bool wallet2::init(std::string daemon_address, boost::optional<epee::net_utils::
   m_upper_transaction_size_limit = upper_transaction_size_limit;
   m_daemon_address = std::move(daemon_address);
   m_daemon_login = std::move(daemon_login);
-  return m_http_client.set_server(get_daemon_address(), get_daemon_login());
+  // When switching from light wallet to full wallet, we need to reset the height we got from lw node.
+  if(m_light_wallet)
+    m_local_bc_height = m_blockchain.size();
+  return m_http_client.set_server(get_daemon_address(), get_daemon_login(), ssl);
 }
 //----------------------------------------------------------------------------------------------------
 bool wallet2::is_deterministic() const
@@ -1513,6 +1516,34 @@ void wallet2::pull_next_blocks(uint64_t start_height, uint64_t &blocks_start_hei
     error = true;
   }
 }
+
+void wallet2::remove_obsolete_pool_txs(const std::vector<crypto::hash> &tx_hashes)
+{
+  // remove pool txes to us that aren't in the pool anymore
+  std::unordered_map<crypto::hash, wallet2::payment_details>::iterator uit = m_unconfirmed_payments.begin();
+  while (uit != m_unconfirmed_payments.end())
+  {
+    const crypto::hash &txid = uit->second.m_tx_hash;
+    bool found = false;
+    for (const auto &it2: tx_hashes)
+    {
+      if (it2 == txid)
+      {
+        found = true;
+        break;
+      }
+    }
+    auto pit = uit++;
+    if (!found)
+    {
+      MDEBUG("Removing " << txid << " from unconfirmed payments, not found in pool");
+      m_unconfirmed_payments.erase(pit);
+      if (0 != m_callback)
+        m_callback->on_pool_tx_removed(txid);
+    }
+  }
+}
+
 //----------------------------------------------------------------------------------------------------
 void wallet2::update_pool_state(bool refreshed)
 {
@@ -1590,28 +1621,8 @@ void wallet2::update_pool_state(bool refreshed)
   // the in transfers list instead (or nowhere if it just
   // disappeared without being mined)
   if (refreshed)
-  {
-    std::unordered_map<crypto::hash, wallet2::payment_details>::iterator uit = m_unconfirmed_payments.begin();
-    while (uit != m_unconfirmed_payments.end())
-    {
-      const crypto::hash &txid = uit->second.m_tx_hash;
-      bool found = false;
-      for (const auto &it2: res.tx_hashes)
-      {
-        if (it2 == txid)
-        {
-          found = true;
-          break;
-        }
-      }
-      auto pit = uit++;
-      if (!found)
-      {
-        MDEBUG("Removing " << txid << " from unconfirmed payments, not found in pool");
-        m_unconfirmed_payments.erase(pit);
-      }
-    }
-  }
+    remove_obsolete_pool_txs(res.tx_hashes);
+
   MDEBUG("update_pool_state done second loop");
 
   // gather txids of new pool txes to us
@@ -1828,6 +1839,39 @@ bool wallet2::delete_address_book_row(std::size_t row_id) {
 //----------------------------------------------------------------------------------------------------
 void wallet2::refresh(uint64_t start_height, uint64_t & blocks_fetched, bool& received_money)
 {
+  if(m_light_wallet) {
+
+    // MyMonero get_address_info needs to be called occasionally to trigger wallet sync.
+    // This call is not really needed for other purposes and can be removed if mymonero changes their backend.
+    cryptonote::COMMAND_RPC_GET_ADDRESS_INFO::response res;
+
+    // Get basic info
+    if(light_wallet_get_address_info(res)) {
+      // Last stored block height
+      uint64_t prev_height = m_light_wallet_blockchain_height;
+      // Update lw heights
+      m_light_wallet_scanned_block_height = res.scanned_block_height;
+      m_light_wallet_blockchain_height = res.blockchain_height;
+      m_local_bc_height = res.blockchain_height;
+      // If new height - call new_block callback
+      if(m_light_wallet_blockchain_height != prev_height)
+      {
+        MDEBUG("new block since last time!");
+        m_callback->on_lw_new_block(m_light_wallet_blockchain_height - 1);
+      }
+      m_light_wallet_connected = true;
+      MDEBUG("lw scanned block height: " <<  m_light_wallet_scanned_block_height);
+      MDEBUG("lw blockchain height: " <<  m_light_wallet_blockchain_height);
+      MDEBUG(m_light_wallet_blockchain_height-m_light_wallet_scanned_block_height << " blocks behind");
+      // TODO: add wallet created block info
+
+      light_wallet_get_address_txs();
+    } else
+      m_light_wallet_connected = false;
+
+    // Lighwallet refresh done
+    return;
+  }
   received_money = false;
   blocks_fetched = 0;
   uint64_t added_blocks = 0;
@@ -2603,6 +2647,12 @@ bool wallet2::check_connection(uint32_t *version, uint32_t timeout)
 
   boost::lock_guard<boost::mutex> lock(m_daemon_rpc_mutex);
 
+  // TODO: Add light wallet version check.
+  if(m_light_wallet) {
+      version = 0;
+      return m_light_wallet_connected;
+  }
+
   if(!m_http_client.is_connected())
   {
     m_node_rpc_proxy.invalidate();
@@ -2896,6 +2946,8 @@ void wallet2::store_to(const std::string &path, const std::string &password)
 uint64_t wallet2::balance(uint32_t index_major) const
 {
   uint64_t amount = 0;
+  if(m_light_wallet)
+    return m_light_wallet_unlocked_balance;
   for (const auto& i : balance_per_subaddress(index_major))
     amount += i.second;
   return amount;
@@ -2904,6 +2956,8 @@ uint64_t wallet2::balance(uint32_t index_major) const
 uint64_t wallet2::unlocked_balance(uint32_t index_major) const
 {
   uint64_t amount = 0;
+  if(m_light_wallet)
+    return m_light_wallet_balance;
   for (const auto& i : unlocked_balance_per_subaddress(index_major))
     amount += i.second;
   return amount;
@@ -3105,10 +3159,15 @@ void wallet2::rescan_blockchain(bool refresh)
 //----------------------------------------------------------------------------------------------------
 bool wallet2::is_transfer_unlocked(const transfer_details& td) const
 {
-  if(!is_tx_spendtime_unlocked(td.m_tx.unlock_time, td.m_block_height))
+  return is_transfer_unlocked(td.m_tx.unlock_time, td.m_block_height);
+}
+//----------------------------------------------------------------------------------------------------
+bool wallet2::is_transfer_unlocked(uint64_t unlock_time, uint64_t block_height) const
+{
+  if(!is_tx_spendtime_unlocked(unlock_time, block_height))
     return false;
 
-  if(td.m_block_height + CRYPTONOTE_DEFAULT_TX_SPENDABLE_AGE > m_blockchain.size())
+  if(block_height + CRYPTONOTE_DEFAULT_TX_SPENDABLE_AGE > m_local_bc_height)
     return false;
 
   return true;
@@ -3119,7 +3178,7 @@ bool wallet2::is_tx_spendtime_unlocked(uint64_t unlock_time, uint64_t block_heig
   if(unlock_time < CRYPTONOTE_MAX_BLOCK_NUMBER)
   {
     //interpret as block index
-    if(m_blockchain.size()-1 + CRYPTONOTE_LOCKED_TX_ALLOWED_DELTA_BLOCKS >= unlock_time)
+    if(m_local_bc_height-1 + CRYPTONOTE_LOCKED_TX_ALLOWED_DELTA_BLOCKS >= unlock_time)
       return true;
     else
       return false;
@@ -3424,25 +3483,42 @@ crypto::hash8 wallet2::get_short_payment_id(const pending_tx &ptx) const
 void wallet2::commit_tx(pending_tx& ptx)
 {
   using namespace cryptonote;
-  crypto::hash txid;
-
-  COMMAND_RPC_SEND_RAW_TX::request req;
-  req.tx_as_hex = epee::string_tools::buff_to_hex_nodelimer(tx_to_blob(ptx.tx));
-  req.do_not_relay = false;
-  COMMAND_RPC_SEND_RAW_TX::response daemon_send_resp;
-  m_daemon_rpc_mutex.lock();
-  bool r = epee::net_utils::invoke_http_json("/sendrawtransaction", req, daemon_send_resp, m_http_client, rpc_timeout);
-  m_daemon_rpc_mutex.unlock();
-  THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "sendrawtransaction");
-  THROW_WALLET_EXCEPTION_IF(daemon_send_resp.status == CORE_RPC_STATUS_BUSY, error::daemon_busy, "sendrawtransaction");
-  THROW_WALLET_EXCEPTION_IF(daemon_send_resp.status != CORE_RPC_STATUS_OK, error::tx_rejected, ptx.tx, daemon_send_resp.status, daemon_send_resp.reason);
-
-  // sanity checks
-  for (size_t idx: ptx.selected_transfers)
+  
+  if(m_light_wallet) 
   {
-    THROW_WALLET_EXCEPTION_IF(idx >= m_transfers.size(), error::wallet_internal_error,
-        "Bad output index in selected transfers: " + boost::lexical_cast<std::string>(idx));
+    cryptonote::COMMAND_RPC_SUBMIT_RAW_TX::request oreq;
+    cryptonote::COMMAND_RPC_SUBMIT_RAW_TX::response ores;
+    oreq.address = get_account().get_public_address_str(m_testnet);
+    oreq.view_key = string_tools::pod_to_hex(get_account().get_keys().m_view_secret_key);
+    oreq.tx = epee::string_tools::buff_to_hex_nodelimer(tx_to_blob(ptx.tx));
+    m_daemon_rpc_mutex.lock();
+    bool r = epee::net_utils::invoke_http_json("/submit_raw_tx", oreq, ores, m_http_client, rpc_timeout, "POST");
+    m_daemon_rpc_mutex.unlock();
+    THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "submit_raw_tx");
+    // MyMonero and OpenMonero use different status strings
+    THROW_WALLET_EXCEPTION_IF(ores.status != "OK" && ores.status != "success" , error::tx_rejected, ptx.tx, ores.status, ores.error);
   }
+  else
+  {
+    // Normal submit
+    COMMAND_RPC_SEND_RAW_TX::request req;
+    req.tx_as_hex = epee::string_tools::buff_to_hex_nodelimer(tx_to_blob(ptx.tx));
+    req.do_not_relay = false;
+    COMMAND_RPC_SEND_RAW_TX::response daemon_send_resp;
+    m_daemon_rpc_mutex.lock();
+    bool r = epee::net_utils::invoke_http_json("/sendrawtransaction", req, daemon_send_resp, m_http_client, rpc_timeout);
+    m_daemon_rpc_mutex.unlock();
+    THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "sendrawtransaction");
+    THROW_WALLET_EXCEPTION_IF(daemon_send_resp.status == CORE_RPC_STATUS_BUSY, error::daemon_busy, "sendrawtransaction");
+    THROW_WALLET_EXCEPTION_IF(daemon_send_resp.status != CORE_RPC_STATUS_OK, error::tx_rejected, ptx.tx, daemon_send_resp.status, daemon_send_resp.reason);
+    // sanity checks
+    for (size_t idx: ptx.selected_transfers)
+    {
+      THROW_WALLET_EXCEPTION_IF(idx >= m_transfers.size(), error::wallet_internal_error,
+          "Bad output index in selected transfers: " + boost::lexical_cast<std::string>(idx));
+    }
+  }
+  crypto::hash txid;
 
   txid = get_transaction_hash(ptx.tx);
   crypto::hash payment_id = crypto::null_hash;
@@ -3864,6 +3940,8 @@ uint64_t wallet2::get_dynamic_per_kb_fee_estimate()
 //----------------------------------------------------------------------------------------------------
 uint64_t wallet2::get_per_kb_fee()
 {
+  if(m_light_wallet)
+    return m_light_wallet_per_kb_fee;
   bool use_dyn_fee = use_fork_rules(HF_VERSION_DYNAMIC_FEE, -720 * 1);
   if (!use_dyn_fee)
     return FEE_PER_KB;
@@ -3989,10 +4067,134 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions(std::vector<crypto
   }
 }
 
+
+bool wallet2::tx_add_fake_output(std::vector<std::vector<tools::wallet2::get_outs_entry>> &outs, uint64_t global_index, const crypto::public_key& tx_public_key, const rct::key& mask, uint64_t real_index, bool unlocked) const
+{
+  if (!unlocked) // don't add locked outs
+    return false;
+  if (global_index == real_index) // don't re-add real one
+    return false;
+  auto item = std::make_tuple(global_index, tx_public_key, mask);
+  if (std::find(outs.back().begin(), outs.back().end(), item) != outs.back().end()) // don't add duplicates
+    return false;
+  outs.back().push_back(item);
+  return true;
+}
+
+void wallet2::light_wallet_get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>> &outs, const std::list<size_t> &selected_transfers, size_t fake_outputs_count) {
+  
+  MDEBUG("LIGHTWALLET - Getting random outs");
+      
+  cryptonote::COMMAND_RPC_GET_RANDOM_OUTS::request oreq;
+  cryptonote::COMMAND_RPC_GET_RANDOM_OUTS::response ores;
+  
+  size_t light_wallet_requested_outputs_count = (size_t)((fake_outputs_count + 1) * 1.5 + 1);
+  
+  // Amounts to ask for
+  // MyMonero api handle amounts and fees as strings
+  for(size_t idx: selected_transfers) {
+    const uint64_t ask_amount = m_transfers[idx].is_rct() ? 0 : m_transfers[idx].amount();
+    std::ostringstream amount_ss;
+    amount_ss << ask_amount;
+    oreq.amounts.push_back(amount_ss.str());
+  }
+  
+  oreq.count = light_wallet_requested_outputs_count;
+  m_daemon_rpc_mutex.lock();
+  bool r = epee::net_utils::invoke_http_json("/get_random_outs", oreq, ores, m_http_client, rpc_timeout, "POST");
+  m_daemon_rpc_mutex.unlock();
+  THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "get_random_outs");
+  THROW_WALLET_EXCEPTION_IF(ores.amount_outs.empty() , error::wallet_internal_error, "No outputs recieved from light wallet node. Error: " + ores.Error);
+  
+  // Check if we got enough outputs for each amount
+  for(auto& out: ores.amount_outs) {
+    const uint64_t out_amount = boost::lexical_cast<uint64_t>(out.amount);
+    THROW_WALLET_EXCEPTION_IF(out.outputs.size() < light_wallet_requested_outputs_count , error::wallet_internal_error, "Not enough outputs for amount: " + boost::lexical_cast<std::string>(out.amount));
+    MDEBUG(out.outputs.size() << " outputs for amount "+ boost::lexical_cast<std::string>(out.amount) + " received from light wallet node");
+  }
+
+  MDEBUG("selected transfers size: " << selected_transfers.size());
+
+  for(size_t idx: selected_transfers)
+  { 
+    // Create new index
+    outs.push_back(std::vector<get_outs_entry>());
+    outs.back().reserve(fake_outputs_count + 1);
+    
+    // add real output first
+    const transfer_details &td = m_transfers[idx];
+    const uint64_t amount = td.is_rct() ? 0 : td.amount();
+    outs.back().push_back(std::make_tuple(td.m_global_output_index, td.get_public_key(), rct::commit(td.amount(), td.m_mask)));
+    MDEBUG("added real output " << string_tools::pod_to_hex(td.get_public_key()));
+    
+    // Even if the lightwallet server returns random outputs, we pick them randomly.
+    std::vector<size_t> order;
+    order.resize(light_wallet_requested_outputs_count);
+    for (size_t n = 0; n < order.size(); ++n)
+      order[n] = n;
+    std::shuffle(order.begin(), order.end(), std::default_random_engine(crypto::rand<unsigned>()));
+    
+    
+    LOG_PRINT_L2("Looking for " << (fake_outputs_count+1) << " outputs with amounts " << print_money(td.is_rct() ? 0 : td.amount()));
+    MDEBUG("OUTS SIZE: " << outs.back().size());
+    for (size_t o = 0; o < light_wallet_requested_outputs_count && outs.back().size() < fake_outputs_count + 1; ++o)
+    {
+      // Random pick
+      size_t i = order[o];
+             
+      // Find which random output key to use
+      bool found_amount = false;
+      size_t amount_key;
+      for(amount_key = 0; amount_key < ores.amount_outs.size(); ++amount_key)
+      {
+        if(boost::lexical_cast<uint64_t>(ores.amount_outs[amount_key].amount) == amount) {
+          found_amount = true;
+          break;
+        }
+      }
+      THROW_WALLET_EXCEPTION_IF(!found_amount , error::wallet_internal_error, "Outputs for amount " + boost::lexical_cast<std::string>(ores.amount_outs[amount_key].amount) + " not found" );
+
+      LOG_PRINT_L2("Index " << i << "/" << light_wallet_requested_outputs_count << ": idx " << ores.amount_outs[amount_key].outputs[i].global_index << " (real " << td.m_global_output_index << "), unlocked " << "(always in light)" << ", key " << ores.amount_outs[0].outputs[i].public_key);
+      
+      // Convert light wallet string data to proper data structures
+      crypto::public_key tx_public_key;
+      rct::key mask = AUTO_VAL_INIT(mask); // decrypted mask - not used here
+      rct::key rct_commit = AUTO_VAL_INIT(rct_commit);
+      THROW_WALLET_EXCEPTION_IF(string_tools::validate_hex(64, ores.amount_outs[amount_key].outputs[i].public_key), error::wallet_internal_error, "Invalid public_key");
+      string_tools::hex_to_pod(ores.amount_outs[amount_key].outputs[i].public_key, tx_public_key);
+      const uint64_t global_index = ores.amount_outs[amount_key].outputs[i].global_index;
+      if(!light_wallet_parse_rct_str(ores.amount_outs[amount_key].outputs[i].rct, tx_public_key, 0, mask, rct_commit, false))
+        rct_commit = rct::zeroCommit(td.amount());
+      
+      if (tx_add_fake_output(outs, global_index, tx_public_key, rct_commit, td.m_global_output_index, true)) {
+        MDEBUG("added fake output " << ores.amount_outs[amount_key].outputs[i].public_key);
+        MDEBUG("index " << global_index);
+      }
+    }
+
+    THROW_WALLET_EXCEPTION_IF(outs.back().size() < fake_outputs_count + 1 , error::wallet_internal_error, "Not enough fake outputs found" );
+    
+    // Real output is the first. Shuffle outputs
+    MTRACE(outs.back().size() << " outputs added. Sorting outputs by index:");
+    std::sort(outs.back().begin(), outs.back().end(), [](const get_outs_entry &a, const get_outs_entry &b) { return std::get<0>(a) < std::get<0>(b); });
+
+    // Print output order
+    for(auto added_out: outs.back())
+      MTRACE(std::get<0>(added_out));
+
+  }
+}
+
 void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>> &outs, const std::list<size_t> &selected_transfers, size_t fake_outputs_count)
 {
   LOG_PRINT_L2("fake_outputs_count: " << fake_outputs_count);
   outs.clear();
+
+  if(m_light_wallet && fake_outputs_count > 0) {
+    light_wallet_get_outs(outs, selected_transfers, fake_outputs_count);
+    return;
+  }
+
   if (fake_outputs_count > 0)
   {
     // get histogram for the amounts we need
@@ -4189,14 +4391,7 @@ void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>>
       {
         size_t i = base + order[o];
         LOG_PRINT_L2("Index " << i << "/" << requested_outputs_count << ": idx " << req.outputs[i].index << " (real " << td.m_global_output_index << "), unlocked " << daemon_resp.outs[i].unlocked << ", key " << daemon_resp.outs[i].key);
-        if (req.outputs[i].index == td.m_global_output_index) // don't re-add real one
-          continue;
-        if (!daemon_resp.outs[i].unlocked) // don't add locked outs
-          continue;
-        auto item = std::make_tuple(req.outputs[i].index, daemon_resp.outs[i].key, daemon_resp.outs[i].mask);
-        if (std::find(outs.back().begin(), outs.back().end(), item) != outs.back().end()) // don't add duplicates
-          continue;
-        outs.back().push_back(item);
+        tx_add_fake_output(outs, req.outputs[i].index, daemon_resp.outs[i].key, daemon_resp.outs[i].mask, td.m_global_output_index, daemon_resp.outs[i].unlocked);
       }
       if (outs.back().size() < fake_outputs_count + 1)
       {
@@ -4218,7 +4413,7 @@ void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>>
       const transfer_details &td = m_transfers[idx];
       std::vector<get_outs_entry> v;
       const rct::key mask = td.is_rct() ? rct::commit(td.amount(), td.m_mask) : rct::zeroCommit(td.amount());
-      v.push_back(std::make_tuple(td.m_global_output_index, boost::get<txout_to_key>(td.m_tx.vout[td.m_internal_output_index].target).key, mask));
+      v.push_back(std::make_tuple(td.m_global_output_index, td.get_public_key(), mask));
       outs.push_back(v);
     }
   }
@@ -4433,6 +4628,9 @@ void wallet2::transfer_selected_rct(std::vector<cryptonote::tx_destination_entry
     src.rct = td.is_rct();
     //paste mixin transaction
 
+    THROW_WALLET_EXCEPTION_IF(outs.size() < out_index + 1 ,  error::wallet_internal_error, "outs.size() < out_index + 1"); 
+    THROW_WALLET_EXCEPTION_IF(outs[out_index].size() < fake_outputs_count ,  error::wallet_internal_error, "fake_outputs_count > random outputs found");
+      
     typedef cryptonote::tx_source_entry::output_entry tx_output_entry;
     for (size_t n = 0; n < fake_outputs_count + 1; ++n)
     {
@@ -4454,7 +4652,7 @@ void wallet2::transfer_selected_rct(std::vector<cryptonote::tx_destination_entry
 
     tx_output_entry real_oe;
     real_oe.first = td.m_global_output_index;
-    real_oe.second.dest = rct::pk2rct(boost::get<txout_to_key>(td.m_tx.vout[td.m_internal_output_index].target).key);
+    real_oe.second.dest = rct::pk2rct(td.get_public_key());
     real_oe.second.mask = rct::commit(td.amount(), td.m_mask);
     *it_to_replace = real_oe;
     src.real_out_tx_key = get_tx_pub_key_from_extra(td.m_tx, td.m_pk_index);
@@ -4701,6 +4899,445 @@ static uint32_t get_count_above(const std::vector<wallet2::transfer_details> &tr
   return count;
 }
 
+bool wallet2::light_wallet_login(bool &new_address)
+{
+  MDEBUG("Light wallet login request");
+  m_light_wallet_connected = false;
+  cryptonote::COMMAND_RPC_LOGIN::request request;
+  cryptonote::COMMAND_RPC_LOGIN::response response;
+  request.address = get_account().get_public_address_str(m_testnet);
+  request.view_key = string_tools::pod_to_hex(get_account().get_keys().m_view_secret_key);
+  // Always create account if it doesnt exist.
+  request.create_account = true;
+  m_daemon_rpc_mutex.lock();
+  bool connected = epee::net_utils::invoke_http_json("/login", request, response, m_http_client, rpc_timeout, "POST");
+  m_daemon_rpc_mutex.unlock();
+  // MyMonero doesn't send any status message. OpenMonero does. 
+  m_light_wallet_connected  = connected && (response.status.empty() || response.status == "success");
+  new_address = response.new_address;
+  MDEBUG("Status: " << response.status);
+  MDEBUG("Reason: " << response.reason);
+  MDEBUG("New wallet: " << response.new_address);
+  if(m_light_wallet_connected)
+  {
+    // Clear old data on successfull login.
+    // m_transfers.clear();
+    // m_payments.clear();
+    // m_unconfirmed_payments.clear();
+  }
+  return m_light_wallet_connected;
+}
+
+bool wallet2::light_wallet_import_wallet_request(cryptonote::COMMAND_RPC_IMPORT_WALLET_REQUEST::response &response)
+{
+  MDEBUG("Light wallet import wallet request");
+  cryptonote::COMMAND_RPC_IMPORT_WALLET_REQUEST::request oreq;
+  oreq.address = get_account().get_public_address_str(m_testnet);
+  oreq.view_key = string_tools::pod_to_hex(get_account().get_keys().m_view_secret_key);
+  m_daemon_rpc_mutex.lock();
+  bool r = epee::net_utils::invoke_http_json("/import_wallet_request", oreq, response, m_http_client, rpc_timeout, "POST");
+  m_daemon_rpc_mutex.unlock();
+  THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "import_wallet_request");
+
+
+  return true;
+}
+
+void wallet2::light_wallet_get_unspent_outs()
+{
+  MDEBUG("Getting unspent outs");
+  
+  cryptonote::COMMAND_RPC_GET_UNSPENT_OUTS::request oreq;
+  cryptonote::COMMAND_RPC_GET_UNSPENT_OUTS::response ores;
+  
+  oreq.amount = "0";
+  oreq.address = get_account().get_public_address_str(m_testnet);
+  oreq.view_key = string_tools::pod_to_hex(get_account().get_keys().m_view_secret_key);
+  // openMonero specific
+  oreq.dust_threshold = boost::lexical_cast<std::string>(::config::DEFAULT_DUST_THRESHOLD);
+  // below are required by openMonero api - but are not used.
+  oreq.mixin = 0;
+  oreq.use_dust = true;
+
+
+  m_daemon_rpc_mutex.lock();
+  bool r = epee::net_utils::invoke_http_json("/get_unspent_outs", oreq, ores, m_http_client, rpc_timeout, "POST");
+  m_daemon_rpc_mutex.unlock();
+  THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "get_unspent_outs");
+  THROW_WALLET_EXCEPTION_IF(ores.status == "error", error::wallet_internal_error, ores.reason);
+  
+  m_light_wallet_per_kb_fee = ores.per_kb_fee;
+  
+  std::unordered_map<crypto::hash,bool> transfers_txs;
+  for(const auto &t: m_transfers)
+    transfers_txs.emplace(t.m_txid,t.m_spent);
+  
+  MDEBUG("FOUND " << ores.outputs.size() <<" outputs");
+  
+  // return if no outputs found
+  if(ores.outputs.empty())
+    return;
+  
+  // Clear old outputs
+  m_transfers.clear();
+  
+  for (const auto &o: ores.outputs) {
+    bool spent = false;
+    bool add_transfer = true;
+    crypto::key_image unspent_key_image;
+    crypto::public_key tx_public_key = AUTO_VAL_INIT(tx_public_key);
+    THROW_WALLET_EXCEPTION_IF(string_tools::validate_hex(64, o.tx_pub_key), error::wallet_internal_error, "Invalid tx_pub_key field");
+    string_tools::hex_to_pod(o.tx_pub_key, tx_public_key);
+    
+    for (const std::string &ski: o.spend_key_images) {
+      spent = false;
+
+      // Check if key image is ours
+      THROW_WALLET_EXCEPTION_IF(string_tools::validate_hex(64, ski), error::wallet_internal_error, "Invalid key image");
+      string_tools::hex_to_pod(ski, unspent_key_image);
+      if(light_wallet_key_image_is_ours(unspent_key_image, tx_public_key, o.index)){
+        MTRACE("Output " << o.public_key << " is spent. Key image: " <<  ski);
+        spent = true;
+        break;
+      } {
+        MTRACE("Unspent output found. " << o.public_key);
+      }
+    }
+
+    // Check if tx already exists in m_transfers. 
+    crypto::hash txid;
+    crypto::public_key tx_pub_key;
+    crypto::public_key public_key;
+    THROW_WALLET_EXCEPTION_IF(string_tools::validate_hex(64, o.tx_hash), error::wallet_internal_error, "Invalid tx_hash field");
+    THROW_WALLET_EXCEPTION_IF(string_tools::validate_hex(64, o.public_key), error::wallet_internal_error, "Invalid public_key field");
+    THROW_WALLET_EXCEPTION_IF(string_tools::validate_hex(64, o.tx_pub_key), error::wallet_internal_error, "Invalid tx_pub_key field");
+    string_tools::hex_to_pod(o.tx_hash, txid);
+    string_tools::hex_to_pod(o.public_key, public_key);
+    string_tools::hex_to_pod(o.tx_pub_key, tx_pub_key);
+    
+    for(auto &t: m_transfers){
+      if(t.get_public_key() == public_key) {
+        t.m_spent = spent;
+        add_transfer = false;
+        break;
+      }
+    }
+    
+    if(!add_transfer)
+      continue;
+    
+    m_transfers.push_back(boost::value_initialized<transfer_details>());
+    transfer_details& td = m_transfers.back();
+    
+    td.m_block_height = o.height;
+    td.m_global_output_index = o.global_index;
+    td.m_txid = txid;
+     
+    // Add to extra
+    add_tx_pub_key_to_extra(td.m_tx, tx_pub_key);
+    
+    td.m_key_image = unspent_key_image;
+    td.m_key_image_known = !m_watch_only;
+    td.m_amount = o.amount;
+    td.m_pk_index = 0;
+    td.m_internal_output_index = o.index;
+    td.m_spent = spent;
+
+    tx_out txout;
+    txout.target = txout_to_key(public_key);
+    txout.amount = td.m_amount;
+    
+    td.m_tx.vout.resize(td.m_internal_output_index + 1);
+    td.m_tx.vout[td.m_internal_output_index] = txout;
+    
+    // Add unlock time and coinbase bool got from get_address_txs api call
+    std::unordered_map<crypto::hash,address_tx>::const_iterator found = m_light_wallet_address_txs.find(txid);
+    THROW_WALLET_EXCEPTION_IF(found == m_light_wallet_address_txs.end(), error::wallet_internal_error, "Lightwallet: tx not found in m_light_wallet_address_txs");
+    bool miner_tx = found->second.m_coinbase;
+    td.m_tx.unlock_time = found->second.m_unlock_time;
+
+    if (!o.rct.empty())
+    {
+      // Coinbase tx's
+      if(miner_tx)
+      {
+        td.m_mask = rct::identity();
+      }
+      else
+      {
+        // rct txs
+        // decrypt rct mask, calculate commit hash and compare against blockchain commit hash
+        rct::key rct_commit;
+        light_wallet_parse_rct_str(o.rct, tx_pub_key, td.m_internal_output_index, td.m_mask, rct_commit, true);
+        bool valid_commit = (rct_commit == rct::commit(td.amount(), td.m_mask));
+        if(!valid_commit)
+        {
+          MDEBUG("output index: " << o.global_index);
+          MDEBUG("mask: " + string_tools::pod_to_hex(td.m_mask));
+          MDEBUG("calculated commit: " + string_tools::pod_to_hex(rct::commit(td.amount(), td.m_mask)));
+          MDEBUG("expected commit: " + string_tools::pod_to_hex(rct_commit));
+          MDEBUG("amount: " << td.amount());
+        }
+        THROW_WALLET_EXCEPTION_IF(!valid_commit, error::wallet_internal_error, "Lightwallet: rct commit hash mismatch!");
+      }
+      td.m_rct = true;
+    }
+    else
+    {
+      td.m_mask = rct::identity();
+      td.m_rct = false;
+    }
+    if(!spent)
+      set_unspent(m_transfers.size()-1);
+    m_key_images[td.m_key_image] = m_transfers.size()-1;
+    m_pub_keys[td.get_public_key()] = m_transfers.size()-1;
+  }
+}
+
+bool wallet2::light_wallet_get_address_info(cryptonote::COMMAND_RPC_GET_ADDRESS_INFO::response &response)
+{
+  MTRACE(__FUNCTION__);
+  
+  cryptonote::COMMAND_RPC_GET_ADDRESS_INFO::request request;
+  
+  request.address = get_account().get_public_address_str(m_testnet);
+  request.view_key = string_tools::pod_to_hex(get_account().get_keys().m_view_secret_key);
+  m_daemon_rpc_mutex.lock();
+  bool r = epee::net_utils::invoke_http_json("/get_address_info", request, response, m_http_client, rpc_timeout, "POST");
+  m_daemon_rpc_mutex.unlock();
+  THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "get_address_info");
+  // TODO: Validate result
+  return true;
+}
+
+void wallet2::light_wallet_get_address_txs()
+{
+  MDEBUG("Refreshing light wallet");
+  
+  cryptonote::COMMAND_RPC_GET_ADDRESS_TXS::request ireq;
+  cryptonote::COMMAND_RPC_GET_ADDRESS_TXS::response ires;
+  
+  ireq.address = get_account().get_public_address_str(m_testnet);
+  ireq.view_key = string_tools::pod_to_hex(get_account().get_keys().m_view_secret_key);
+  m_daemon_rpc_mutex.lock();
+  bool r = epee::net_utils::invoke_http_json("/get_address_txs", ireq, ires, m_http_client, rpc_timeout, "POST");
+  m_daemon_rpc_mutex.unlock();
+  THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "get_address_txs");
+  //OpenMonero sends status=success, Mymonero doesn't. 
+  THROW_WALLET_EXCEPTION_IF((!ires.status.empty() && ires.status != "success"), error::no_connection_to_daemon, "get_address_txs");
+
+  
+  // Abort if no transactions
+  if(ires.transactions.empty())
+    return;
+  
+  // Create searchable vectors
+  std::vector<crypto::hash> payments_txs;
+  for(const auto &p: m_payments)
+    payments_txs.push_back(p.second.m_tx_hash);
+  std::vector<crypto::hash> unconfirmed_payments_txs;
+  for(const auto &up: m_unconfirmed_payments)
+    unconfirmed_payments_txs.push_back(up.second.m_tx_hash);
+
+  // for balance calculation
+  uint64_t wallet_total_sent = 0;
+  uint64_t wallet_total_unlocked_sent = 0;
+  // txs in pool
+  std::vector<crypto::hash> pool_txs;
+
+  for (const auto &t: ires.transactions) {
+    const uint64_t total_received = t.total_received;
+    uint64_t total_sent = t.total_sent;
+
+    // Check key images - subtract fake outputs from total_sent
+    for(const auto &so: t.spent_outputs)
+    {
+      crypto::public_key tx_public_key;
+      crypto::key_image key_image;
+      THROW_WALLET_EXCEPTION_IF(string_tools::validate_hex(64, so.tx_pub_key), error::wallet_internal_error, "Invalid tx_pub_key field");
+      THROW_WALLET_EXCEPTION_IF(string_tools::validate_hex(64, so.key_image), error::wallet_internal_error, "Invalid key_image field");
+      string_tools::hex_to_pod(so.tx_pub_key, tx_public_key);
+      string_tools::hex_to_pod(so.key_image, key_image);
+
+      if(!light_wallet_key_image_is_ours(key_image, tx_public_key, so.out_index)) {
+        THROW_WALLET_EXCEPTION_IF(so.amount > t.total_sent, error::wallet_internal_error, "Lightwallet: total sent is negative!");
+        total_sent -= so.amount;
+      }
+    }
+
+    // Do not add tx if empty. 
+    if(total_sent == 0 && total_received == 0)
+      continue;
+    
+    crypto::hash payment_id = null_hash;
+    crypto::hash tx_hash;
+    
+    THROW_WALLET_EXCEPTION_IF(string_tools::validate_hex(64, t.payment_id), error::wallet_internal_error, "Invalid payment_id field");
+    THROW_WALLET_EXCEPTION_IF(string_tools::validate_hex(64, t.hash), error::wallet_internal_error, "Invalid hash field");
+    string_tools::hex_to_pod(t.payment_id, payment_id);
+    string_tools::hex_to_pod(t.hash, tx_hash);
+
+    // lightwallet specific info
+    bool incoming = (total_received > total_sent);
+    address_tx address_tx;
+    address_tx.m_tx_hash = tx_hash;
+    address_tx.m_incoming = incoming;
+    address_tx.m_amount  =  incoming ? total_received - total_sent : total_sent - total_received;
+    address_tx.m_block_height = t.height;
+    address_tx.m_unlock_time  = t.unlock_time;
+    address_tx.m_timestamp = t.timestamp;
+    address_tx.m_coinbase  = t.coinbase;
+    address_tx.m_mempool  = t.mempool;
+    m_light_wallet_address_txs.emplace(tx_hash,address_tx);
+
+    // populate data needed for history (m_payments, m_unconfirmed_payments, m_confirmed_txs)
+    // INCOMING transfers
+    if(total_received > total_sent) {
+      payment_details payment;
+      payment.m_tx_hash = tx_hash;
+      payment.m_amount       = total_received - total_sent;
+      payment.m_block_height = t.height;
+      payment.m_unlock_time  = t.unlock_time;
+      payment.m_timestamp = t.timestamp;
+        
+      if (t.mempool) {   
+        if (std::find(unconfirmed_payments_txs.begin(), unconfirmed_payments_txs.end(), tx_hash) == unconfirmed_payments_txs.end()) {
+          pool_txs.push_back(tx_hash);
+          m_unconfirmed_payments.emplace(tx_hash, payment);
+          if (0 != m_callback) {
+            m_callback->on_lw_unconfirmed_money_received(t.height, payment.m_tx_hash, payment.m_amount);
+          }
+        }
+      } else {
+        if (std::find(payments_txs.begin(), payments_txs.end(), tx_hash) == payments_txs.end()) {
+          m_payments.emplace(tx_hash, payment);
+          if (0 != m_callback) {
+            m_callback->on_lw_money_received(t.height, payment.m_tx_hash, payment.m_amount);
+          }
+        }
+      }
+    // Outgoing transfers
+    } else {
+      uint64_t amount_sent = total_sent - total_received;
+      cryptonote::transaction dummy_tx; // not used by light wallet
+      // increase wallet total sent
+      wallet_total_sent += total_sent;
+      if (t.mempool)
+      {
+        // Handled by add_unconfirmed_tx in commit_tx
+        // If sent from another wallet instance we need to add it
+        if(m_unconfirmed_txs.find(tx_hash) == m_unconfirmed_txs.end())
+        {
+          unconfirmed_transfer_details utd;
+          utd.m_amount_in = amount_sent;
+          utd.m_amount_out = amount_sent;
+          utd.m_change = 0;
+          utd.m_payment_id = payment_id;
+          utd.m_timestamp = t.timestamp;
+          utd.m_state = wallet2::unconfirmed_transfer_details::pending;
+          m_unconfirmed_txs.emplace(tx_hash,utd);
+        }
+      }
+      else
+      {
+        // Only add if new
+        auto confirmed_tx = m_confirmed_txs.find(tx_hash);
+        if(confirmed_tx == m_confirmed_txs.end()) {
+          // tx is added to m_unconfirmed_txs - move to confirmed
+          if(m_unconfirmed_txs.find(tx_hash) != m_unconfirmed_txs.end()) 
+          { 
+            process_unconfirmed(tx_hash, dummy_tx, t.height);
+          }
+          // Tx sent by another wallet instance
+          else
+          {
+            confirmed_transfer_details ctd;
+            ctd.m_amount_in = amount_sent;
+            ctd.m_amount_out = amount_sent;
+            ctd.m_change = 0;
+            ctd.m_payment_id = payment_id;
+            ctd.m_block_height = t.height;
+            ctd.m_timestamp = t.timestamp;
+            m_confirmed_txs.emplace(tx_hash,ctd);
+          }
+          if (0 != m_callback)
+          {
+            m_callback->on_lw_money_spent(t.height, tx_hash, amount_sent);
+          } 
+        }
+        // If not new - check the amount and update if necessary.
+        // when sending a tx to same wallet the receiving amount has to be credited
+        else
+        {
+          if(confirmed_tx->second.m_amount_in != amount_sent || confirmed_tx->second.m_amount_out != amount_sent)
+          {
+            MDEBUG("Adjusting amount sent/received for tx: <" + t.hash + ">. Is tx sent to own wallet? " << print_money(amount_sent) << " != " << print_money(confirmed_tx->second.m_amount_in));
+            confirmed_tx->second.m_amount_in = amount_sent;
+            confirmed_tx->second.m_amount_out = amount_sent;
+            confirmed_tx->second.m_change = 0;
+          }
+        }
+      }
+    }    
+  }
+  // TODO: purge old unconfirmed_txs
+  remove_obsolete_pool_txs(pool_txs);
+
+  // Calculate wallet balance
+  m_light_wallet_balance = ires.total_received-wallet_total_sent;
+  // MyMonero doesnt send unlocked balance
+  if(ires.total_received_unlocked > 0)
+    m_light_wallet_unlocked_balance = ires.total_received_unlocked-wallet_total_sent;
+  else
+    m_light_wallet_unlocked_balance = m_light_wallet_balance;
+}
+
+bool wallet2::light_wallet_parse_rct_str(const std::string& rct_string, const crypto::public_key& tx_pub_key, uint64_t internal_output_index, rct::key& decrypted_mask, rct::key& rct_commit, bool decrypt) const
+{
+  // rct string is empty if output is non RCT
+  if (rct_string.empty())
+    return false;
+  // rct_string is a string with length 64+64+64 (<rct commit> + <encrypted mask> + <rct amount>)
+  rct::key encrypted_mask;
+  std::string rct_commit_str = rct_string.substr(0,64);
+  std::string encrypted_mask_str = rct_string.substr(64,64);
+  THROW_WALLET_EXCEPTION_IF(string_tools::validate_hex(64, rct_commit_str), error::wallet_internal_error, "Invalid rct commit hash: " + rct_commit_str);
+  THROW_WALLET_EXCEPTION_IF(string_tools::validate_hex(64, encrypted_mask_str), error::wallet_internal_error, "Invalid rct mask: " + encrypted_mask_str);
+  string_tools::hex_to_pod(rct_commit_str, rct_commit);
+  string_tools::hex_to_pod(encrypted_mask_str, encrypted_mask);
+  if (decrypt) {
+    // Decrypt the mask
+    crypto::key_derivation derivation;
+    generate_key_derivation(tx_pub_key, get_account().get_keys().m_view_secret_key, derivation);
+    crypto::secret_key scalar;
+    crypto::derivation_to_scalar(derivation, internal_output_index, scalar);
+    sc_sub(decrypted_mask.bytes,encrypted_mask.bytes,rct::hash_to_scalar(rct::sk2rct(scalar)).bytes);
+  }
+  return true;
+}
+
+bool wallet2::light_wallet_key_image_is_ours(const crypto::key_image& key_image, const crypto::public_key& tx_public_key, uint64_t out_index)
+{
+  // Lookup key image from cache
+  std::map<uint64_t, crypto::key_image> index_keyimage_map;
+  std::unordered_map<crypto::public_key, std::map<uint64_t, crypto::key_image> >::const_iterator found_pub_key = m_key_image_cache.find(tx_public_key);
+  if(found_pub_key != m_key_image_cache.end()) {
+    // pub key found. key image for index cached?
+    index_keyimage_map = found_pub_key->second;
+    std::map<uint64_t,crypto::key_image>::const_iterator index_found = index_keyimage_map.find(out_index);
+    if(index_found != index_keyimage_map.end())
+      return key_image == index_found->second;
+  }
+
+  // Not in cache - calculate key image
+  crypto::key_image calculated_key_image;
+  cryptonote::keypair in_ephemeral;
+  cryptonote::generate_key_image_helper(get_account().get_keys(), tx_public_key, out_index, in_ephemeral, calculated_key_image);
+  index_keyimage_map.emplace(out_index, calculated_key_image);
+  m_key_image_cache.emplace(tx_public_key, index_keyimage_map);
+  return key_image == calculated_key_image;
+}
+
 // Another implementation of transaction creation that is hopefully better
 // While there is anything left to pay, it goes through random outputs and tries
 // to fill the next destination/amount. If it fully fills it, it will use the
@@ -4718,6 +5355,10 @@ static uint32_t get_count_above(const std::vector<wallet2::transfer_details> &tr
 // usable balance.
 std::vector<wallet2::pending_tx> wallet2::create_transactions_2(std::vector<cryptonote::tx_destination_entry> dsts, const size_t fake_outs_count, const uint64_t unlock_time, uint32_t priority, const std::vector<uint8_t>& extra, uint32_t subaddr_account, std::set<uint32_t> subaddr_indices, bool trusted_daemon)
 {
+  if(m_light_wallet) {
+    // Populate m_transfers
+    light_wallet_get_unspent_outs();
+  }
   std::vector<std::pair<uint32_t, std::vector<size_t>>> unused_transfers_indices_per_subaddr;
   std::vector<std::pair<uint32_t, std::vector<size_t>>> unused_dust_indices_per_subaddr;
   uint64_t needed_money;
@@ -4880,7 +5521,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_2(std::vector<cryp
   std::vector<size_t> preferred_inputs;
   uint64_t rct_outs_needed = 2 * (fake_outs_count + 1);
   rct_outs_needed += 100; // some fudge factor since we don't know how many are locked
-  if (use_rct && get_num_rct_outputs() >= rct_outs_needed)
+  if (use_rct)
   {
     // this is used to build a tx that's 1 or 2 inputs, and 2 outputs, which
     // will get us a known fee.
@@ -5334,6 +5975,9 @@ void wallet2::get_hard_fork_info(uint8_t version, uint64_t &earliest_height)
 //----------------------------------------------------------------------------------------------------
 bool wallet2::use_fork_rules(uint8_t version, int64_t early_blocks)
 {
+  // TODO: How to get fork rule info from light wallet node?
+  if(m_light_wallet)
+    return true;
   uint64_t height, earliest_height;
   boost::optional<std::string> result = m_node_rpc_proxy.get_height(height);
   throw_on_rpc_response_error(result, "get_info");

src/wallet/wallet2.h

@@ -71,11 +71,19 @@ namespace tools
   class i_wallet2_callback
   {
   public:
+    // Full wallet callbacks
     virtual void on_new_block(uint64_t height, const cryptonote::block& block) {}
     virtual void on_money_received(uint64_t height, const crypto::hash &txid, const cryptonote::transaction& tx, uint64_t amount, const cryptonote::subaddress_index& subaddr_index) {}
     virtual void on_unconfirmed_money_received(uint64_t height, const crypto::hash &txid, const cryptonote::transaction& tx, uint64_t amount, const cryptonote::subaddress_index& subaddr_index) {}
     virtual void on_money_spent(uint64_t height, const crypto::hash &txid, const cryptonote::transaction& in_tx, uint64_t amount, const cryptonote::transaction& spend_tx, const cryptonote::subaddress_index& subaddr_index) {}
     virtual void on_skip_transaction(uint64_t height, const crypto::hash &txid, const cryptonote::transaction& tx) {}
+    // Light wallet callbacks
+    virtual void on_lw_new_block(uint64_t height) {}
+    virtual void on_lw_money_received(uint64_t height, const crypto::hash &txid, uint64_t amount) {}
+    virtual void on_lw_unconfirmed_money_received(uint64_t height, const crypto::hash &txid, uint64_t amount) {}
+    virtual void on_lw_money_spent(uint64_t height, const crypto::hash &txid, uint64_t amount) {}
+    // Common callbacks
+    virtual void on_pool_tx_removed(const crypto::hash &txid) {}
     virtual ~i_wallet2_callback() {}
   };
 
@@ -165,7 +173,7 @@ namespace tools
 
     static bool verify_password(const std::string& keys_file_name, const std::string& password, bool watch_only);
 
-    wallet2(bool testnet = false, bool restricted = false) : m_run(true), m_callback(0), m_testnet(testnet), m_always_confirm_transfers(true), m_print_ring_members(false), m_store_tx_info(true), m_default_mixin(0), m_default_priority(0), m_refresh_type(RefreshOptimizeCoinbase), m_auto_refresh(true), m_refresh_from_block_height(0), m_confirm_missing_payment_id(true), m_ask_password(true), m_min_output_count(0), m_min_output_value(0), m_merge_destinations(false), m_confirm_backlog(true), m_is_initialized(false), m_restricted(restricted), is_old_file_format(false), m_node_rpc_proxy(m_http_client, m_daemon_rpc_mutex) {}
+    wallet2(bool testnet = false, bool restricted = false) : m_run(true), m_callback(0), m_testnet(testnet), m_always_confirm_transfers(true), m_print_ring_members(false), m_store_tx_info(true), m_default_mixin(0), m_default_priority(0), m_refresh_type(RefreshOptimizeCoinbase), m_auto_refresh(true), m_refresh_from_block_height(0), m_confirm_missing_payment_id(true), m_ask_password(true), m_min_output_count(0), m_min_output_value(0), m_merge_destinations(false), m_confirm_backlog(true), m_is_initialized(false), m_restricted(restricted), is_old_file_format(false), m_node_rpc_proxy(m_http_client, m_daemon_rpc_mutex), m_light_wallet(false), m_light_wallet_scanned_block_height(0), m_light_wallet_blockchain_height(0), m_light_wallet_connected(false), m_light_wallet_balance(0), m_light_wallet_unlocked_balance(0) {}
 
     struct tx_scan_info_t
     {
@@ -229,6 +237,13 @@ namespace tools
       cryptonote::subaddress_index m_subaddr_index;
     };
 
+    struct address_tx : payment_details
+    {
+      bool m_coinbase;
+      bool m_mempool;
+      bool m_incoming;
+    };
+
     struct unconfirmed_transfer_details
     {
       cryptonote::transaction_prefix m_tx;
@@ -410,7 +425,7 @@ namespace tools
     // the minimum block size.
     bool deinit();
     bool init(std::string daemon_address = "http://localhost:8080",
-      boost::optional<epee::net_utils::http::login> daemon_login = boost::none, uint64_t upper_transaction_size_limit = 0);
+      boost::optional<epee::net_utils::http::login> daemon_login = boost::none, uint64_t upper_transaction_size_limit = 0, bool ssl = false);
 
     void stop() { m_run.store(false, std::memory_order_relaxed); }
 
@@ -422,6 +437,15 @@ namespace tools
      */
     bool is_deterministic() const;
     bool get_seed(std::string& electrum_words, const std::string &passphrase = std::string()) const;
+
+    /*!
+    * \brief Checks if light wallet. A light wallet sends view key to a server where the blockchain is scanned.
+    */
+    bool light_wallet() const { return m_light_wallet; }
+    void set_light_wallet(bool light_wallet) { m_light_wallet = light_wallet; }
+    uint64_t get_light_wallet_scanned_block_height() const { return m_light_wallet_scanned_block_height; }
+    uint64_t get_light_wallet_blockchain_height() const { return m_light_wallet_blockchain_height; }
+
     /*!
      * \brief Gets the seed language
      */
@@ -512,6 +536,7 @@ namespace tools
     void rescan_spent();
     void rescan_blockchain(bool refresh = true);
     bool is_transfer_unlocked(const transfer_details& td) const;
+    bool is_transfer_unlocked(uint64_t unlock_time, uint64_t block_height) const;
     template <class t_archive>
     inline void serialize(t_archive &a, const unsigned int ver)
     {
@@ -695,6 +720,7 @@ namespace tools
     uint64_t import_key_images(const std::string &filename, uint64_t &spent, uint64_t &unspent);
 
     void update_pool_state(bool refreshed = false);
+    void remove_obsolete_pool_txs(const std::vector<crypto::hash> &tx_hashes);
 
     std::string encrypt(const std::string &plaintext, const crypto::secret_key &skey, bool authenticated = true) const;
     std::string encrypt_with_view_secret_key(const std::string &plaintext, bool authenticated = true) const;
@@ -713,6 +739,24 @@ namespace tools
     uint64_t get_fee_multiplier(uint32_t priority, int fee_algorithm = -1);
     uint64_t get_per_kb_fee();
 
+    // Light wallet specific functions
+    // fetch unspent outs from lw node and store in m_transfers
+    void light_wallet_get_unspent_outs();
+    // fetch txs and store in m_payments
+    void light_wallet_get_address_txs();
+    // get_address_info
+    bool light_wallet_get_address_info(cryptonote::COMMAND_RPC_GET_ADDRESS_INFO::response &response);
+    // Login. new_address is true if address hasn't been used on lw node before.
+    bool light_wallet_login(bool &new_address);
+    // Send an import request to lw node. returns info about import fee, address and payment_id
+    bool light_wallet_import_wallet_request(cryptonote::COMMAND_RPC_IMPORT_WALLET_REQUEST::response &response);
+    // get random outputs from light wallet server
+    void light_wallet_get_outs(std::vector<std::vector<get_outs_entry>> &outs, const std::list<size_t> &selected_transfers, size_t fake_outputs_count);
+    // Parse rct string
+    bool light_wallet_parse_rct_str(const std::string& rct_string, const crypto::public_key& tx_pub_key, uint64_t internal_output_index, rct::key& decrypted_mask, rct::key& rct_commit, bool decrypt) const;
+    // check if key image is ours
+    bool light_wallet_key_image_is_ours(const crypto::key_image& key_image, const crypto::public_key& tx_public_key, uint64_t out_index);
+
   private:
     /*!
      * \brief  Stores wallet information to wallet file.
@@ -759,6 +803,8 @@ namespace tools
     void set_spent(size_t idx, uint64_t height);
     void set_unspent(size_t idx);
     void get_outs(std::vector<std::vector<get_outs_entry>> &outs, const std::list<size_t> &selected_transfers, size_t fake_outputs_count);
+    bool tx_add_fake_output(std::vector<std::vector<tools::wallet2::get_outs_entry>> &outs, uint64_t global_index, const crypto::public_key& tx_public_key, const rct::key& mask, uint64_t real_index, bool unlocked) const;
+    bool wallet_generate_key_image_helper(const cryptonote::account_keys& ack, const crypto::public_key& tx_public_key, size_t real_output_index, cryptonote::keypair& in_ephemeral, crypto::key_image& ki);
     crypto::public_key get_tx_pub_key_from_received_outs(const tools::wallet2::transfer_details &td) const;
     bool should_pick_a_second_output(bool use_rct, size_t n_transfers, const std::vector<size_t> &unused_transfers_indices, const std::vector<size_t> &unused_dust_indices) const;
     std::vector<size_t> get_only_rct(const std::vector<size_t> &unused_dust_indices, const std::vector<size_t> &unused_transfers_indices) const;
@@ -820,6 +866,20 @@ namespace tools
     bool m_is_initialized;
     NodeRPCProxy m_node_rpc_proxy;
     std::unordered_set<crypto::hash> m_scanned_pool_txs[2];
+
+    // Light wallet
+    bool m_light_wallet; /* sends view key to daemon for scanning */
+    uint64_t m_light_wallet_scanned_block_height;
+    uint64_t m_light_wallet_blockchain_height;
+    uint64_t m_light_wallet_per_kb_fee = FEE_PER_KB;
+    bool m_light_wallet_connected;
+    uint64_t m_light_wallet_balance;
+    uint64_t m_light_wallet_unlocked_balance;
+    // Light wallet info needed to populate m_payment requires 2 separate api calls (get_address_txs and get_unspent_outs)
+    // We save the info from the first call in m_light_wallet_address_txs for easier lookup.
+    std::unordered_map<crypto::hash, address_tx> m_light_wallet_address_txs;
+    // store calculated key image for faster lookup
+    std::unordered_map<crypto::public_key, std::map<uint64_t, crypto::key_image> > m_key_image_cache;
   };
 }
 BOOST_CLASS_VERSION(tools::wallet2, 20)

src/wallet/wallet2_api.h

@@ -427,9 +427,12 @@ struct Wallet
      *
      * \param daemon_address - daemon address in "hostname:port" format
      * \param upper_transaction_size_limit
+     * \param daemon_username
+     * \param daemon_password
+     * \param lightWallet - start wallet in light mode, connect to a openmonero compatible server.
      * \return  - true on success
      */
-    virtual bool init(const std::string &daemon_address, uint64_t upper_transaction_size_limit, const std::string &daemon_username = "", const std::string &daemon_password = "") = 0;
+    virtual bool init(const std::string &daemon_address, uint64_t upper_transaction_size_limit = 0, const std::string &daemon_username = "", const std::string &daemon_password = "", bool use_ssl = false, bool lightWallet = false) = 0;
 
    /*!
     * \brief createWatchOnly - Creates a watch only wallet
@@ -722,6 +725,12 @@ struct Wallet
     * \return true on success
     */
     virtual bool rescanSpent() = 0;
+    
+    //! Light wallet authenticate and login
+    virtual bool lightWalletLogin(bool &isNewWallet) const = 0;
+    
+    //! Initiates a light wallet import wallet request
+    virtual bool lightWalletImportWalletRequest(std::string &payment_id, uint64_t &fee, bool &new_request, bool &request_fulfilled, std::string &payment_address, std::string &status) = 0;
 };
 
 /**