daemon: implement missing print_bc and matching RPC

src/daemon/rpc_command_executor.cpp

@@ -440,11 +440,6 @@ bool t_rpc_command_executor::print_connections() {
 }
 
 bool t_rpc_command_executor::print_blockchain_info(uint64_t start_block_index, uint64_t end_block_index) {
-
-// this function appears to not exist in the json rpc api, and so is commented
-// until such a time as it does.
-
-/*
   cryptonote::COMMAND_RPC_GET_BLOCK_HEADERS_RANGE::request req;
   cryptonote::COMMAND_RPC_GET_BLOCK_HEADERS_RANGE::response res;
   epee::json_rpc::error error_resp;
@@ -463,25 +458,26 @@ bool t_rpc_command_executor::print_blockchain_info(uint64_t start_block_index, u
   }
   else
   {
-    if (!m_rpc_server->on_getblockheadersrange(req, res, error_resp) || res.status != CORE_RPC_STATUS_OK)
+    if (!m_rpc_server->on_get_block_headers_range(req, res, error_resp) || res.status != CORE_RPC_STATUS_OK)
     {
       tools::fail_msg_writer() << fail_message.c_str();
       return true;
     }
   }
 
+  bool first = true;
   for (auto & header : res.headers)
   {
+    if (!first)
+      std::cout << std::endl;
     std::cout
-      << "major version: " << header.major_version << std::endl
+      << "major version: " << (unsigned)header.major_version << ", minor version: " << (unsigned)header.minor_version << std::endl
-      << "minor version: " << header.minor_version << std::endl
       << "height: " << header.height << ", timestamp: " << header.timestamp << ", difficulty: " << header.difficulty << std::endl
-      << "block id: " << header.hash << std::endl
+      << "block id: " << header.hash << ", previous block id: " << header.prev_hash << std::endl
-      << "previous block id: " << header.prev_hash << std::endl
+      << "difficulty: " << header.difficulty << ", nonce " << header.nonce << ", reward " << cryptonote::print_money(header.reward) << std::endl;
-      << "difficulty: " << header.difficulty << ", nonce " << header.nonce << std::endl;
+    first = false;
   }
 
-*/
   return true;
 }
 

src/rpc/core_rpc_server.cpp

@@ -923,6 +923,57 @@ namespace cryptonote
     return true;
   }
   //------------------------------------------------------------------------------------------------------------------------------
+  bool core_rpc_server::on_get_block_headers_range(const COMMAND_RPC_GET_BLOCK_HEADERS_RANGE::request& req, COMMAND_RPC_GET_BLOCK_HEADERS_RANGE::response& res, epee::json_rpc::error& error_resp){
+    if(!check_core_busy())
+    {
+      error_resp.code = CORE_RPC_ERROR_CODE_CORE_BUSY;
+      error_resp.message = "Core is busy.";
+      return false;
+    }
+    const uint64_t bc_height = m_core.get_current_blockchain_height();
+    if (req.start_height >= bc_height || req.end_height >= bc_height || req.start_height > req.end_height)
+    {
+      error_resp.code = CORE_RPC_ERROR_CODE_TOO_BIG_HEIGHT;
+      error_resp.message = "Invalid start/end heights.";
+      return false;
+    }
+    for (uint64_t h = req.start_height; h <= req.end_height; ++h)
+    {
+      crypto::hash block_hash = m_core.get_block_id_by_height(h);
+      block blk;
+      bool have_block = m_core.get_block_by_hash(block_hash, blk);
+      if (!have_block)
+      {
+        error_resp.code = CORE_RPC_ERROR_CODE_INTERNAL_ERROR;
+        error_resp.message = "Internal error: can't get block by height. Height = " + boost::lexical_cast<std::string>(h) + ". Hash = " + epee::string_tools::pod_to_hex(block_hash) + '.';
+        return false;
+      }
+      if (blk.miner_tx.vin.front().type() != typeid(txin_gen))
+      {
+        error_resp.code = CORE_RPC_ERROR_CODE_INTERNAL_ERROR;
+        error_resp.message = "Internal error: coinbase transaction in the block has the wrong type";
+        return false;
+      }
+      uint64_t block_height = boost::get<txin_gen>(blk.miner_tx.vin.front()).height;
+      if (block_height != h)
+      {
+        error_resp.code = CORE_RPC_ERROR_CODE_INTERNAL_ERROR;
+        error_resp.message = "Internal error: coinbase transaction in the block has the wrong height";
+        return false;
+      }
+      res.headers.push_back(block_header_responce());
+      bool responce_filled = fill_block_header_responce(blk, false, block_height, block_hash, res.headers.back());
+      if (!responce_filled)
+      {
+        error_resp.code = CORE_RPC_ERROR_CODE_INTERNAL_ERROR;
+        error_resp.message = "Internal error: can't produce valid response.";
+        return false;
+      }
+    }
+    res.status = CORE_RPC_STATUS_OK;
+    return true;
+  }
+  //------------------------------------------------------------------------------------------------------------------------------
   bool core_rpc_server::on_get_block_header_by_height(const COMMAND_RPC_GET_BLOCK_HEADER_BY_HEIGHT::request& req, COMMAND_RPC_GET_BLOCK_HEADER_BY_HEIGHT::response& res, epee::json_rpc::error& error_resp){
     if(!check_core_busy())
     {

src/rpc/core_rpc_server.h

@@ -106,6 +106,7 @@ namespace cryptonote
         MAP_JON_RPC_WE("getlastblockheader",     on_get_last_block_header,      COMMAND_RPC_GET_LAST_BLOCK_HEADER)
         MAP_JON_RPC_WE("getblockheaderbyhash",   on_get_block_header_by_hash,   COMMAND_RPC_GET_BLOCK_HEADER_BY_HASH)
         MAP_JON_RPC_WE("getblockheaderbyheight", on_get_block_header_by_height, COMMAND_RPC_GET_BLOCK_HEADER_BY_HEIGHT)
+        MAP_JON_RPC_WE("getblockheadersrange",   on_get_block_headers_range,    COMMAND_RPC_GET_BLOCK_HEADERS_RANGE)
         MAP_JON_RPC_WE("getblock",                on_get_block,                 COMMAND_RPC_GET_BLOCK)
         MAP_JON_RPC_WE_IF("get_connections",     on_get_connections,            COMMAND_RPC_GET_CONNECTIONS, !m_restricted)
         MAP_JON_RPC_WE("get_info",               on_get_info_json,              COMMAND_RPC_GET_INFO)
@@ -151,6 +152,7 @@ namespace cryptonote
     bool on_get_last_block_header(const COMMAND_RPC_GET_LAST_BLOCK_HEADER::request& req, COMMAND_RPC_GET_LAST_BLOCK_HEADER::response& res, epee::json_rpc::error& error_resp);
     bool on_get_block_header_by_hash(const COMMAND_RPC_GET_BLOCK_HEADER_BY_HASH::request& req, COMMAND_RPC_GET_BLOCK_HEADER_BY_HASH::response& res, epee::json_rpc::error& error_resp);
     bool on_get_block_header_by_height(const COMMAND_RPC_GET_BLOCK_HEADER_BY_HEIGHT::request& req, COMMAND_RPC_GET_BLOCK_HEADER_BY_HEIGHT::response& res, epee::json_rpc::error& error_resp);
+    bool on_get_block_headers_range(const COMMAND_RPC_GET_BLOCK_HEADERS_RANGE::request& req, COMMAND_RPC_GET_BLOCK_HEADERS_RANGE::response& res, epee::json_rpc::error& error_resp);
     bool on_get_block(const COMMAND_RPC_GET_BLOCK::request& req, COMMAND_RPC_GET_BLOCK::response& res, epee::json_rpc::error& error_resp);
     bool on_get_connections(const COMMAND_RPC_GET_CONNECTIONS::request& req, COMMAND_RPC_GET_CONNECTIONS::response& res, epee::json_rpc::error& error_resp);
     bool on_get_info_json(const COMMAND_RPC_GET_INFO::request& req, COMMAND_RPC_GET_INFO::response& res, epee::json_rpc::error& error_resp);