core: fix mining from a block that's not the current top

1 files changed, 11 insertions, 15 deletions

diff --git a/src/rpc/core_rpc_server.cpp b/src/rpc/core_rpc_server.cpp
index 9e17bed63..555da9ddd 100644
--- a/src/rpc/core_rpc_server.cpp
+++ b/src/rpc/core_rpc_server.cpp
@@ -1642,7 +1642,7 @@ namespace cryptonote
   bool core_rpc_server::get_block_template(const account_public_address &address, const crypto::hash *prev_block, const cryptonote::blobdata &extra_nonce, size_t &reserved_offset, cryptonote::difficulty_type  &difficulty, uint64_t &height, uint64_t &expected_reward, block &b, uint64_t &seed_height, crypto::hash &seed_hash, crypto::hash &next_seed_hash, epee::json_rpc::error &error_resp)
   {
     b = boost::value_initialized<cryptonote::block>();
-    if(!m_core.get_block_template(b, prev_block, address, difficulty, height, expected_reward, extra_nonce))
+    if(!m_core.get_block_template(b, prev_block, address, difficulty, height, expected_reward, extra_nonce, seed_height, seed_hash))
     {
       error_resp.code = CORE_RPC_ERROR_CODE_INTERNAL_ERROR;
       error_resp.message = "Internal error: failed to create block template";
@@ -1659,17 +1659,6 @@ namespace cryptonote
       return false;
     }
 
-    if (b.major_version >= RX_BLOCK_VERSION)
-    {
-      uint64_t next_height;
-      crypto::rx_seedheights(height, &seed_height, &next_height);
-      seed_hash = m_core.get_block_id_by_height(seed_height);
-      if (next_height != seed_height)
-        next_seed_hash = m_core.get_block_id_by_height(next_height);
-      else
-        next_seed_hash = seed_hash;
-    }
-
     if (extra_nonce.empty())
     {
       reserved_offset = 0;
@@ -1897,9 +1886,16 @@ namespace cryptonote
         return false;
       }
       b.nonce = req.starting_nonce;
-      miner::find_nonce_for_given_block([this](const cryptonote::block &b, uint64_t height, unsigned int threads, crypto::hash &hash) {
-        return cryptonote::get_block_longhash(&(m_core.get_blockchain_storage()), b, hash, height, threads);
-      }, b, template_res.difficulty, template_res.height);
+      crypto::hash seed_hash = crypto::null_hash;
+      if (b.major_version >= RX_BLOCK_VERSION && !epee::string_tools::hex_to_pod(template_res.seed_hash, seed_hash))
+      {
+        error_resp.code = CORE_RPC_ERROR_CODE_INTERNAL_ERROR;
+        error_resp.message = "Error converting seed hash";
+        return false;
+      }
+      miner::find_nonce_for_given_block([this](const cryptonote::block &b, uint64_t height, const crypto::hash *seed_hash, unsigned int threads, crypto::hash &hash) {
+        return cryptonote::get_block_longhash(&(m_core.get_blockchain_storage()), b, hash, height, seed_hash, threads);
+      }, b, template_res.difficulty, template_res.height, &seed_hash);
 
       submit_req.front() = string_tools::buff_to_hex_nodelimer(block_to_blob(b));
       r = on_submitblock(submit_req, submit_res, error_resp, ctx);