daemon: print time to next fork

src/cryptonote_core/blockchain.h

@@ -666,6 +666,13 @@ namespace cryptonote
      */
     uint8_t get_ideal_hard_fork_version() const { return m_hardfork->get_ideal_version(); }
 
+    /**
+     * @brief returns the next hardfork version
+     *
+     * @return the version
+     */
+    uint8_t get_next_hard_fork_version() const { return m_hardfork->get_next_version(); }
+
     /**
      * @brief returns the newest hardfork version voted to be enabled
      * as of a certain height

src/cryptonote_core/hardfork.cpp

@@ -369,6 +369,18 @@ uint64_t HardFork::get_earliest_ideal_height_for_version(uint8_t version) const
   return 0;
 }
 
+uint8_t HardFork::get_next_version() const
+{
+  CRITICAL_REGION_LOCAL(lock);
+  uint64_t height = db.height();
+  for (unsigned int n = heights.size() - 1; n > 0; --n) {
+    if (height >= heights[n].height) {
+      return heights[n < heights.size() - 1 ? n + 1 : n].version;
+    }
+  }
+  return original_version;
+}
+
 bool HardFork::get_voting_info(uint8_t version, uint32_t &window, uint32_t &votes, uint32_t &threshold, uint64_t &earliest_height, uint8_t &voting) const
 {
   CRITICAL_REGION_LOCAL(lock);

src/cryptonote_core/hardfork.h

@@ -168,6 +168,13 @@ namespace cryptonote
      */
     uint8_t get_ideal_version(uint64_t height) const;
 
+    /**
+     * @brief returns the next version
+     *
+     * This is the version which will we fork to next
+     */
+    uint8_t get_next_version() const;
+
     /**
      * @brief returns the current version
      *

src/daemon/rpc_command_executor.cpp

@@ -274,6 +274,27 @@ static std::string get_mining_speed(uint64_t hr)
   return (boost::format("%.0f H/s") % hr).str();
 }
 
+static std::string get_fork_extra_info(uint64_t t, uint64_t now, uint64_t block_time)
+{
+  uint64_t blocks_per_day = 86400 / block_time;
+
+  if (t == now)
+    return " (forking now)";
+
+  if (t > now)
+  {
+    uint64_t dblocks = t - now;
+    if (dblocks <= 30)
+      return (boost::format(" (next fork in %u blocks)") % (unsigned)dblocks).str();
+    if (dblocks <= blocks_per_day / 2)
+      return (boost::format(" (next fork in %.1f hours)") % (dblocks / (float)(blocks_per_day / 24))).str();
+    if (dblocks <= blocks_per_day * 30)
+      return (boost::format(" (next fork in %.1f days)") % (dblocks / (float)blocks_per_day)).str();
+    return "";
+  }
+  return "";
+}
+
 bool t_rpc_command_executor::show_status() {
   cryptonote::COMMAND_RPC_GET_INFO::request ireq;
   cryptonote::COMMAND_RPC_GET_INFO::response ires;
@@ -331,7 +352,7 @@ bool t_rpc_command_executor::show_status() {
     }
   }
 
-  tools::success_msg_writer() << boost::format("Height: %llu/%llu (%.1f%%) on %s, %s, net hash %s, v%u, %s, %u+%u connections")
+  tools::success_msg_writer() << boost::format("Height: %llu/%llu (%.1f%%) on %s, %s, net hash %s, v%u%s, %s, %u+%u connections")
     % (unsigned long long)ires.height
     % (unsigned long long)(ires.target_height >= ires.height ? ires.target_height : ires.height)
     % (100.0f * ires.height / (ires.target_height ? ires.target_height < ires.height ? ires.height : ires.target_height : ires.height))
@@ -339,6 +360,7 @@ bool t_rpc_command_executor::show_status() {
     % (mining_busy ? "syncing" : mres.active ? "mining at " + get_mining_speed(mres.speed) : "not mining")
     % get_mining_speed(ires.difficulty / ires.target)
     % (unsigned)hfres.version
+    % get_fork_extra_info(hfres.earliest_height, ires.height, ires.target)
     % (hfres.state == cryptonote::HardFork::Ready ? "up to date" : hfres.state == cryptonote::HardFork::UpdateNeeded ? "update needed" : "out of date, likely forked")
     % (unsigned)ires.outgoing_connections_count % (unsigned)ires.incoming_connections_count
   ;

src/rpc/core_rpc_server.cpp

@@ -1025,7 +1025,7 @@ namespace cryptonote
 
 #if BLOCKCHAIN_DB == DB_LMDB
     const Blockchain &blockchain = m_core.get_blockchain_storage();
-    uint8_t version = req.version > 0 ? req.version : blockchain.get_ideal_hard_fork_version();
+    uint8_t version = req.version > 0 ? req.version : blockchain.get_next_hard_fork_version();
     res.version = blockchain.get_current_hard_fork_version();
     res.enabled = blockchain.get_hard_fork_voting_info(version, res.window, res.votes, res.threshold, res.earliest_height, res.voting);
     res.state = blockchain.get_hard_fork_state();