Merge upstream updates into blockchain branch

src/cryptonote_core/blockchain_storage.cpp

@@ -87,6 +87,7 @@ bool blockchain_storage::init(const std::string& config_folder, bool testnet)
 {
   CRITICAL_REGION_LOCAL(m_blockchain_lock);
   m_config_folder = config_folder;
+  m_testnet = testnet;
   LOG_PRINT_L0("Loading blockchain...");
   const std::string filename = m_config_folder + "/" CRYPTONOTE_BLOCKCHAINDATA_FILENAME;
   if(tools::unserialize_obj_from_file(*this, filename))
@@ -1699,7 +1700,14 @@ bool blockchain_storage::handle_block_to_main_chain(const block& bl, const crypt
   bei.bl = bl;
   bei.block_cumulative_size = cumulative_block_size;
   bei.cumulative_difficulty = current_diffic;
-  bei.already_generated_coins = already_generated_coins + base_reward;
+
+  // In the "tail" state when the minimum subsidy (implemented in get_block_reward) is in effect, the number of 
+  // coins will eventually exceed MONEY_SUPPLY and overflow a uint64. To prevent overflow, cap already_generated_coins 
+  // at MONEY_SUPPLY. already_generated_coins is only used to compute the block subsidy and MONEY_SUPPLY yields a 
+  // subsidy of 0 under the base formula and therefore the minimum subsidy >0 in the tail state.
+
+  bei.already_generated_coins = base_reward < (MONEY_SUPPLY-already_generated_coins) ? already_generated_coins + base_reward : MONEY_SUPPLY;
+
   if(m_blocks.size())
     bei.cumulative_difficulty += m_blocks.back().cumulative_difficulty;
 
@@ -1823,7 +1831,7 @@ bool blockchain_storage::update_checkpoints(const std::string& file_path, bool c
   else if (check_dns)
   {
     checkpoints dns_points;
-    cryptonote::load_checkpoints_from_dns(dns_points);
+    cryptonote::load_checkpoints_from_dns(dns_points, m_testnet);
     if (m_checkpoints.check_for_conflicts(dns_points))
     {
       check_against_checkpoints(dns_points, false);

src/cryptonote_core/blockchain_storage.h

@@ -223,6 +223,7 @@ namespace cryptonote
     std::atomic<bool> m_is_blockchain_storing;
 
     bool m_enforce_dns_checkpoints;
+    bool m_testnet;
 
     bool switch_to_alternative_blockchain(std::list<blocks_ext_by_hash::iterator>& alt_chain, bool discard_disconnected_chain);
     bool pop_block_from_blockchain();

src/cryptonote_core/checkpoints_create.cpp

@@ -76,6 +76,7 @@ bool create_checkpoints(cryptonote::checkpoints& checkpoints)
   ADD_CHECKPOINT(231350, "b5add137199b820e1ea26640e5c3e121fd85faa86a1e39cf7e6cc097bdeb1131");
   ADD_CHECKPOINT(232150, "955de8e6b6508af2c24f7334f97beeea651d78e9ade3ab18fec3763be3201aa8");
   ADD_CHECKPOINT(249380, "654fb0a81ce3e5caf7e3264a70f447d4bd07586c08fa50f6638cc54da0a52b2d");
+  ADD_CHECKPOINT(460000, "75037a7aed3e765db96c75bcf908f59d690a5f3390baebb9edeafd336a1c4831");
 
   return true;
 }
@@ -112,7 +113,7 @@ bool load_checkpoints_from_json(cryptonote::checkpoints& checkpoints, std::strin
   return true;
 }
 
-bool load_checkpoints_from_dns(cryptonote::checkpoints& checkpoints)
+bool load_checkpoints_from_dns(cryptonote::checkpoints& checkpoints, bool testnet)
 {
   // All four MoneroPulse domains have DNSSEC on and valid
   static const std::vector<std::string> dns_urls = { "checkpoints.moneropulse.se"
@@ -120,6 +121,12 @@ bool load_checkpoints_from_dns(cryptonote::checkpoints& checkpoints)
 						   , "checkpoints.moneropulse.net"
 						   , "checkpoints.moneropulse.co"
   };
+
+  static const std::vector<std::string> testnet_dns_urls = { "testpoints.moneropulse.se"
+							   , "testpoints.moneropulse.org"
+							   , "testpoints.moneropulse.net"
+							   , "testpoints.moneropulse.co"
+  };
   bool avail, valid;
   std::vector<std::string> records;
 
@@ -131,7 +138,14 @@ bool load_checkpoints_from_dns(cryptonote::checkpoints& checkpoints)
   size_t cur_index = first_index;
   do
   {
-    records = tools::DNSResolver::instance().get_txt_record(dns_urls[cur_index], avail, valid);
+    if (testnet)
+    {
+      records = tools::DNSResolver::instance().get_txt_record(testnet_dns_urls[cur_index], avail, valid);
+    }
+    else
+    {
+      records = tools::DNSResolver::instance().get_txt_record(dns_urls[cur_index], avail, valid);
+    }
     if (records.size() == 0 || (avail && !valid))
     {
       cur_index++;

src/cryptonote_core/checkpoints_create.h

@@ -42,7 +42,7 @@ namespace cryptonote
   bool create_checkpoints(cryptonote::checkpoints& checkpoints);
 
   bool load_checkpoints_from_json(cryptonote::checkpoints& checkpoints, std::string json_hashfile_fullpath);
-  bool load_checkpoints_from_dns(cryptonote::checkpoints& checkpoints);
+  bool load_checkpoints_from_dns(cryptonote::checkpoints& checkpoints, bool testnet = false);
   bool load_new_checkpoints(cryptonote::checkpoints& checkpoints, std::string json_hashfile_fullpath);
 
 }  // namespace cryptonote

src/cryptonote_core/cryptonote_basic_impl.cpp

@@ -60,6 +60,10 @@ namespace cryptonote {
   //-----------------------------------------------------------------------------------------------
   bool get_block_reward(size_t median_size, size_t current_block_size, uint64_t already_generated_coins, uint64_t &reward) {
     uint64_t base_reward = (MONEY_SUPPLY - already_generated_coins) >> EMISSION_SPEED_FACTOR;
+    if (base_reward < FINAL_SUBSIDY_PER_MINUTE)
+    {
+      base_reward = FINAL_SUBSIDY_PER_MINUTE;
+    }
 
     //make it soft
     if (median_size < CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE) {

src/cryptonote_core/cryptonote_core.cpp

@@ -42,6 +42,8 @@ using namespace epee;
 #include "cryptonote_format_utils.h"
 #include "misc_language.h"
 #include <csignal>
+#include "daemon/command_line_args.h"
+#include "cryptonote_core/checkpoints_create.h"
 
 DISABLE_VS_WARNINGS(4355)
 
@@ -112,14 +114,41 @@ namespace cryptonote
     return res;
   }
   //-----------------------------------------------------------------------------------
+  void core::stop()
+  {
+    graceful_exit();
+  }
+  //-----------------------------------------------------------------------------------
   void core::init_options(boost::program_options::options_description& /*desc*/)
   {
   }
   //-----------------------------------------------------------------------------------------------
-  bool core::handle_command_line(const boost::program_options::variables_map& vm, bool testnet)
+  bool core::handle_command_line(const boost::program_options::variables_map& vm)
   {
-    auto data_dir_arg = testnet ? command_line::arg_testnet_data_dir : command_line::arg_data_dir;
+    m_testnet = command_line::get_arg(vm, daemon_args::arg_testnet_on);
+
+    auto data_dir_arg = m_testnet ? command_line::arg_testnet_data_dir : command_line::arg_data_dir;
     m_config_folder = command_line::get_arg(vm, data_dir_arg);
+
+    auto data_dir = boost::filesystem::path(m_config_folder);
+
+    if (!m_testnet)
+    {
+      cryptonote::checkpoints checkpoints;
+      if (!cryptonote::create_checkpoints(checkpoints))
+      {
+        throw std::runtime_error("Failed to initialize checkpoints");
+      }
+      set_checkpoints(std::move(checkpoints));
+
+      boost::filesystem::path json(JSON_HASH_FILE_NAME);
+      boost::filesystem::path checkpoint_json_hashfile_fullpath = data_dir / json;
+
+      set_checkpoints_file_path(checkpoint_json_hashfile_fullpath.string());
+    }
+
+
+    set_enforce_dns_checkpoints(command_line::get_arg(vm, daemon_args::arg_dns_checkpoints));
     return true;
   }
   //-----------------------------------------------------------------------------------------------
@@ -158,21 +187,21 @@ namespace cryptonote
     return m_blockchain_storage.get_alternative_blocks_count();
   }
   //-----------------------------------------------------------------------------------------------
-  bool core::init(const boost::program_options::variables_map& vm, bool testnet)
+  bool core::init(const boost::program_options::variables_map& vm)
   {
-    bool r = handle_command_line(vm, testnet);
+    bool r = handle_command_line(vm);
 
     r = m_mempool.init(m_config_folder);
     CHECK_AND_ASSERT_MES(r, false, "Failed to initialize memory pool");
 
-    r = m_blockchain_storage.init(m_config_folder, testnet);
+    r = m_blockchain_storage.init(m_config_folder, m_testnet);
     CHECK_AND_ASSERT_MES(r, false, "Failed to initialize blockchain storage");
 
     // load json & DNS checkpoints, and verify them
     // with respect to what blocks we already have
     CHECK_AND_ASSERT_MES(update_checkpoints(), false, "One or more checkpoints loaded from json or dns conflicted with existing checkpoints.");
 
-    r = m_miner.init(vm, testnet);
+    r = m_miner.init(vm, m_testnet);
     CHECK_AND_ASSERT_MES(r, false, "Failed to initialize blockchain storage");
 
     return load_state_data();

src/cryptonote_core/cryptonote_core.h

@@ -76,7 +76,7 @@ namespace cryptonote
 
      miner& get_miner(){return m_miner;}
      static void init_options(boost::program_options::options_description& desc);
-     bool init(const boost::program_options::variables_map& vm, bool testnet);
+     bool init(const boost::program_options::variables_map& vm);
      bool set_genesis_block(const block& b);
      bool deinit();
      uint64_t get_current_blockchain_height();
@@ -133,6 +133,8 @@ namespace cryptonote
 
      bool update_checkpoints();
 
+     void stop();
+
    private:
      bool add_new_tx(const transaction& tx, const crypto::hash& tx_hash, const crypto::hash& tx_prefix_hash, size_t blob_size, tx_verification_context& tvc, bool keeped_by_block);
      bool add_new_tx(const transaction& tx, tx_verification_context& tvc, bool keeped_by_block);
@@ -150,7 +152,7 @@ namespace cryptonote
      bool check_tx_ring_signature(const txin_to_key& tx, const crypto::hash& tx_prefix_hash, const std::vector<crypto::signature>& sig);
      bool is_tx_spendtime_unlocked(uint64_t unlock_time);
      bool update_miner_block_template();
-     bool handle_command_line(const boost::program_options::variables_map& vm, bool testnet);
+     bool handle_command_line(const boost::program_options::variables_map& vm);
      bool on_update_blocktemplate_interval();
      bool check_tx_inputs_keyimages_diff(const transaction& tx);
      void graceful_exit();
@@ -175,6 +177,7 @@ namespace cryptonote
 
      uint64_t m_target_blockchain_height;
 
+     bool m_testnet;
      std::string m_checkpoints_path;
      time_t m_last_dns_checkpoints_update;
      time_t m_last_json_checkpoints_update;