wallet: optional automatic refresh from the daemon

The daemon will be polled every 90 seconds for new blocks.
It is enabled by default, and can be turned on/off with
set auto-refresh 1 and set auto-refresh 0 in the wallet.

contrib/epee/include/console_handler.h

@@ -251,27 +251,33 @@ namespace epee
       m_stdin_reader.stop();
     }
 
+    void print_prompt()
+    {
+      if (!m_prompt.empty())
+      {
+        epee::log_space::set_console_color(epee::log_space::console_color_yellow, true);
+        std::cout << m_prompt;
+        if (' ' != m_prompt.back())
+          std::cout << ' ';
+        epee::log_space::reset_console_color();
+        std::cout.flush();
+      }
+    }
+
   private:
     template<typename t_cmd_handler>
     bool run(const std::string& prompt, const std::string& usage, const t_cmd_handler& cmd_handler, std::function<void(void)> exit_handler)
     {
       TRY_ENTRY();
       bool continue_handle = true;
+      m_prompt = prompt;
       while(continue_handle)
       {
         if (!m_running)
         {
           break;
         }
-        if (!prompt.empty())
+        print_prompt();
-        {
-          epee::log_space::set_console_color(epee::log_space::console_color_yellow, true);
-          std::cout << prompt;
-          if (' ' != prompt.back())
-            std::cout << ' ';
-          epee::log_space::reset_console_color();
-          std::cout.flush();
-        }
 
         std::string command;
         bool get_line_ret = m_stdin_reader.get_line(command);
@@ -313,6 +319,7 @@ namespace epee
   private:
     async_stdin_reader m_stdin_reader;
     std::atomic<bool> m_running = {true};
+    std::string m_prompt;
   };
 
 
@@ -447,6 +454,11 @@ namespace epee
     {
       return m_console_handler.run(boost::bind(&console_handlers_binder::process_command_str, this, _1), prompt, usage_string, exit_handler);
     }
+
+    void print_prompt()
+    {
+      m_console_handler.print_prompt();
+    }
   };
 
   ///* work around because of broken boost bind */

src/simplewallet/simplewallet.cpp

@@ -421,6 +421,42 @@ bool simple_wallet::set_default_mixin(const std::vector<std::string> &args/* = s
   }
 }
 
+bool simple_wallet::set_auto_refresh(const std::vector<std::string> &args/* = std::vector<std::string>()*/)
+{
+  bool success = false;
+  tools::password_container pwd_container;
+  success = pwd_container.read_password();
+  if (!success)
+  {
+    fail_msg_writer() << tr("failed to read wallet password");
+    return true;
+  }
+
+  /* verify password before using so user doesn't accidentally set a new password for rewritten wallet */
+  success = m_wallet->verify_password(pwd_container.password());
+  if (!success)
+  {
+    fail_msg_writer() << tr("invalid password");
+    return true;
+  }
+
+  bool auto_refresh = is_it_true(args[1]);
+  m_wallet->auto_refresh(auto_refresh);
+  if (auto_refresh && !m_auto_refresh_run.load(std::memory_order_relaxed))
+  {
+    m_auto_refresh_run.store(true, std::memory_order_relaxed);
+    m_auto_refresh_thread = std::thread([&]{wallet_refresh_thread();});
+  }
+  else if (!auto_refresh && m_auto_refresh_run.load(std::memory_order_relaxed))
+  {
+    m_auto_refresh_run.store(false, std::memory_order_relaxed);
+    m_auto_refresh_thread.join();
+  }
+
+  m_wallet->rewrite(m_wallet_file, pwd_container.password());
+  return true;
+}
+
 bool simple_wallet::help(const std::vector<std::string> &args/* = std::vector<std::string>()*/)
 {
   success_msg_writer() << get_commands_str();
@@ -430,6 +466,8 @@ bool simple_wallet::help(const std::vector<std::string> &args/* = std::vector<st
 simple_wallet::simple_wallet()
   : m_daemon_port(0)
   , m_refresh_progress_reporter(*this)
+  , m_auto_refresh_run(false)
+  , m_auto_refresh_refreshing(false)
 {
   m_cmd_binder.set_handler("start_mining", boost::bind(&simple_wallet::start_mining, this, _1), tr("start_mining [<number_of_threads>] - Start mining in daemon"));
   m_cmd_binder.set_handler("stop_mining", boost::bind(&simple_wallet::stop_mining, this, _1), tr("Stop mining in daemon"));
@@ -450,7 +488,7 @@ simple_wallet::simple_wallet()
   m_cmd_binder.set_handler("viewkey", boost::bind(&simple_wallet::viewkey, this, _1), tr("Get viewkey"));
   m_cmd_binder.set_handler("spendkey", boost::bind(&simple_wallet::spendkey, this, _1), tr("Get spendkey"));
   m_cmd_binder.set_handler("seed", boost::bind(&simple_wallet::seed, this, _1), tr("Get deterministic seed"));
-  m_cmd_binder.set_handler("set", boost::bind(&simple_wallet::set_variable, this, _1), tr("available options: seed language - Set wallet seed langage; always-confirm-transfers <1|0> - whether to confirm unsplit txes; store-tx-info <1|0> - whether to store per outgoing tx info (destination address, payment id, tx secret key) for future reference; default_mixin <n> - set default mixin (default default is 4"));
+  m_cmd_binder.set_handler("set", boost::bind(&simple_wallet::set_variable, this, _1), tr("available options: seed language - Set wallet seed langage; always-confirm-transfers <1|0> - whether to confirm unsplit txes; store-tx-info <1|0> - whether to store per outgoing tx info (destination address, payment id, tx secret key) for future reference; default_mixin <n> - set default mixin (default default is 4; auto-refresh <1|0> - whether to automatically refresh new blocks from the daemon"));
   m_cmd_binder.set_handler("rescan_spent", boost::bind(&simple_wallet::rescan_spent, this, _1), tr("Rescan blockchain for spent outputs"));
   m_cmd_binder.set_handler("get_tx_key", boost::bind(&simple_wallet::get_tx_key, this, _1), tr("Get transaction key (r) for a given tx"));
   m_cmd_binder.set_handler("check_tx_key", boost::bind(&simple_wallet::check_tx_key, this, _1), tr("Check amount going to a given address in a partcular tx"));
@@ -462,7 +500,7 @@ bool simple_wallet::set_variable(const std::vector<std::string> &args)
 {
   if (args.empty())
   {
-    fail_msg_writer() << tr("set: needs an argument. available options: seed, always-confirm-transfers, default-mixin");
+    fail_msg_writer() << tr("set: needs an argument. available options: seed, always-confirm-transfers, default-mixin, auto-refresh");
     return true;
   }
   else
@@ -527,6 +565,21 @@ bool simple_wallet::set_variable(const std::vector<std::string> &args)
         return true;
       }
     }
+    else if (args[0] == "auto-refresh")
+    {
+      if (args.size() <= 1)
+      {
+        fail_msg_writer() << tr("set auto-refresh: needs an argument (0 or 1)");
+        return true;
+      }
+      else
+      {
+        std::vector<std::string> local_args = args;
+        local_args.erase(local_args.begin(), local_args.begin()+2);
+        set_auto_refresh(local_args);
+        return true;
+      }
+    }
   }
   fail_msg_writer() << tr("set: unrecognized argument(s)");
   return true;
@@ -1028,6 +1081,12 @@ bool simple_wallet::open_wallet(const string &wallet_file, const std::string& pa
 //----------------------------------------------------------------------------------------------------
 bool simple_wallet::close_wallet()
 {
+  if (m_auto_refresh_run.load(std::memory_order_relaxed))
+  {
+    m_auto_refresh_run.store(false, std::memory_order_relaxed);
+    m_auto_refresh_thread.join();
+  }
+
   bool r = m_wallet->deinit();
   if (!r)
   {
@@ -1175,38 +1234,50 @@ bool simple_wallet::save_bc(const std::vector<std::string>& args)
 //----------------------------------------------------------------------------------------------------
 void simple_wallet::on_new_block(uint64_t height, const cryptonote::block& block)
 {
+  if (!m_auto_refresh_refreshing)
     m_refresh_progress_reporter.update(height, false);
 }
 //----------------------------------------------------------------------------------------------------
 void simple_wallet::on_money_received(uint64_t height, const cryptonote::transaction& tx, size_t out_index)
 {
-  message_writer(epee::log_space::console_color_green, false) <<
+  message_writer(epee::log_space::console_color_green, false) << "\r" <<
     tr("Height ") << height << ", " <<
     tr("transaction ") << get_transaction_hash(tx) << ", " <<
     tr("received ") << print_money(tx.vout[out_index].amount);
+  if (m_auto_refresh_refreshing)
+    m_cmd_binder.print_prompt();
+  else
     m_refresh_progress_reporter.update(height, true);
 }
 //----------------------------------------------------------------------------------------------------
 void simple_wallet::on_money_spent(uint64_t height, const cryptonote::transaction& in_tx, size_t out_index, const cryptonote::transaction& spend_tx)
 {
-  message_writer(epee::log_space::console_color_magenta, false) <<
+  message_writer(epee::log_space::console_color_magenta, false) << "\r" <<
     tr("Height ") << height << ", " <<
     tr("transaction ") << get_transaction_hash(spend_tx) << ", " <<
     tr("spent ") << print_money(in_tx.vout[out_index].amount);
+  if (m_auto_refresh_refreshing)
+    m_cmd_binder.print_prompt();
+  else
     m_refresh_progress_reporter.update(height, true);
 }
 //----------------------------------------------------------------------------------------------------
 void simple_wallet::on_skip_transaction(uint64_t height, const cryptonote::transaction& tx)
 {
-  message_writer(epee::log_space::console_color_red, true) <<
+  message_writer(epee::log_space::console_color_red, true) << "\r" <<
     tr("Height ") << height << ", " <<
     tr("transaction ") << get_transaction_hash(tx) << ", " <<
     tr("unsupported transaction format");
+  if (m_auto_refresh_refreshing)
+    m_cmd_binder.print_prompt();
+  else
     m_refresh_progress_reporter.update(height, true);
 }
 //----------------------------------------------------------------------------------------------------
 bool simple_wallet::refresh(const std::vector<std::string>& args)
 {
+  std::unique_lock<std::mutex> lock(m_auto_refresh_mutex);
+
   if (!try_connect_to_daemon())
     return true;
 
@@ -2146,9 +2217,33 @@ bool simple_wallet::show_transfers(const std::vector<std::string> &args_)
   return true;
 }
 //----------------------------------------------------------------------------------------------------
+void simple_wallet::wallet_refresh_thread()
+{
+  while (true)
+  {
+    std::unique_lock<std::mutex> lock(m_auto_refresh_mutex);
+    m_auto_refresh_refreshing = true;
+    try
+    {
+      uint64_t fetched_blocks;
+      m_wallet->refresh(0, fetched_blocks);
+    }
+    catch(...) {}
+    m_auto_refresh_refreshing = false;
+    m_auto_refresh_cond.wait_for(lock, chrono::seconds(90));
+    if (!m_auto_refresh_run.load(std::memory_order_relaxed))
+      break;
+  }
+}
+//----------------------------------------------------------------------------------------------------
 bool simple_wallet::run()
 {
   std::string addr_start = m_wallet->get_account().get_public_address_str(m_wallet->testnet()).substr(0, 6);
+  m_auto_refresh_run = m_wallet->auto_refresh();
+  if (m_auto_refresh_run)
+  {
+    m_auto_refresh_thread = std::thread([&]{wallet_refresh_thread();});
+  }
   return m_cmd_binder.run_handling(std::string("[") + tr("wallet") + " " + addr_start + "]: ", "");
 }
 //----------------------------------------------------------------------------------------------------

src/simplewallet/simplewallet.h

@@ -77,6 +77,8 @@ namespace cryptonote
 
     bool run_console_handler();
 
+    void wallet_refresh_thread();
+
     bool new_wallet(const std::string &wallet_file, const std::string& password, const crypto::secret_key& recovery_key,
         bool recover, bool two_random, bool testnet, const std::string &old_language);
     bool new_wallet(const std::string &wallet_file, const std::string& password, const cryptonote::account_public_address& address,
@@ -101,6 +103,7 @@ namespace cryptonote
     bool set_always_confirm_transfers(const std::vector<std::string> &args = std::vector<std::string>());
     bool set_store_tx_info(const std::vector<std::string> &args = std::vector<std::string>());
     bool set_default_mixin(const std::vector<std::string> &args = std::vector<std::string>());
+    bool set_auto_refresh(const std::vector<std::string> &args = std::vector<std::string>());
     bool help(const std::vector<std::string> &args = std::vector<std::string>());
     bool start_mining(const std::vector<std::string> &args);
     bool stop_mining(const std::vector<std::string> &args);
@@ -229,5 +232,11 @@ namespace cryptonote
     std::unique_ptr<tools::wallet2> m_wallet;
     epee::net_utils::http::http_simple_client m_http_client;
     refresh_progress_reporter_t m_refresh_progress_reporter;
+
+    std::atomic<bool> m_auto_refresh_run;
+    bool m_auto_refresh_refreshing;
+    std::thread m_auto_refresh_thread;
+    std::mutex m_auto_refresh_mutex;
+    std::condition_variable m_auto_refresh_cond;
   };
 }

src/wallet/wallet2.cpp

@@ -744,6 +744,9 @@ bool wallet2::store_keys(const std::string& keys_file_name, const std::string& p
   value2.SetUint(m_default_mixin);
   json.AddMember("default_mixin", value2, json.GetAllocator());
 
+  value2.SetInt(m_auto_refresh ? 1 :0);
+  json.AddMember("auto_refresh", value2, json.GetAllocator());
+
   // Serialize the JSON object
   rapidjson::StringBuffer buffer;
   rapidjson::Writer<rapidjson::StringBuffer> writer(buffer);
@@ -828,6 +831,7 @@ void wallet2::load_keys(const std::string& keys_file_name, const std::string& pa
     m_store_tx_info = (json.HasMember("store_tx_keys") && (json["store_tx_keys"].GetInt() != 0))
                    || (json.HasMember("store_tx_info") && (json["store_tx_info"].GetInt() != 0));
     m_default_mixin = json.HasMember("default_mixin") ? json["default_mixin"].GetUint() : 0;
+    m_auto_refresh = json.HasMember("auto_refresh") && (json["auto_refresh"].GetInt() != 0);
   }
 
   const cryptonote::account_keys& keys = m_account.get_keys();

src/wallet/wallet2.h

@@ -87,10 +87,10 @@ namespace tools
     };
 
   private:
-    wallet2(const wallet2&) : m_run(true), m_callback(0), m_testnet(false), m_always_confirm_transfers (false), m_store_tx_info(true), m_default_mixin(0), m_refresh_type(RefreshOptimizeCoinbase) {}
+    wallet2(const wallet2&) : m_run(true), m_callback(0), m_testnet(false), m_always_confirm_transfers (false), m_store_tx_info(true), m_default_mixin(0), m_refresh_type(RefreshOptimizeCoinbase), m_auto_refresh(true) {}
 
   public:
-    wallet2(bool testnet = false, bool restricted = false) : m_run(true), m_callback(0), m_testnet(testnet), m_restricted(restricted), is_old_file_format(false), m_store_tx_info(true), m_default_mixin(0), m_refresh_type(RefreshOptimizeCoinbase) {}
+    wallet2(bool testnet = false, bool restricted = false) : m_run(true), m_callback(0), m_testnet(testnet), m_restricted(restricted), is_old_file_format(false), m_store_tx_info(true), m_default_mixin(0), m_refresh_type(RefreshOptimizeCoinbase), m_auto_refresh(true) {}
     struct transfer_details
     {
       uint64_t m_block_height;
@@ -330,6 +330,8 @@ namespace tools
     void store_tx_info(bool store) { m_store_tx_info = store; }
     uint32_t default_mixin() const { return m_default_mixin; }
     void default_mixin(uint32_t m) { m_default_mixin = m; }
+    bool auto_refresh() const { return m_auto_refresh; }
+    void auto_refresh(bool r) { m_auto_refresh = r; }
 
     bool get_tx_key(const crypto::hash &txid, crypto::secret_key &tx_key) const;
 
@@ -397,6 +399,7 @@ namespace tools
     bool m_store_tx_info; /*!< request txkey to be returned in RPC, and store in the wallet cache file */
     uint32_t m_default_mixin;
     RefreshType m_refresh_type;
+    bool m_auto_refresh;
   };
 }
 BOOST_CLASS_VERSION(tools::wallet2, 10)