alt_chain_info can now give more info about a particular alt chain

1 files changed, 14 insertions, 2 deletions

diff --git a/src/rpc/core_rpc_server.cpp b/src/rpc/core_rpc_server.cpp
index dc7b6b30f..e87078398 100644
--- a/src/rpc/core_rpc_server.cpp
+++ b/src/rpc/core_rpc_server.cpp
@@ -1774,10 +1774,22 @@ namespace cryptonote
     PERF_TIMER(on_get_alternate_chains);
     try
     {
-      std::list<std::pair<Blockchain::block_extended_info, uint64_t>> chains = m_core.get_blockchain_storage().get_alternative_chains();
+      std::list<std::pair<Blockchain::block_extended_info, std::vector<crypto::hash>>> chains = m_core.get_blockchain_storage().get_alternative_chains();
       for (const auto &i: chains)
       {
-        res.chains.push_back(COMMAND_RPC_GET_ALTERNATE_CHAINS::chain_info{epee::string_tools::pod_to_hex(get_block_hash(i.first.bl)), i.first.height, i.second, i.first.cumulative_difficulty});
+        res.chains.push_back(COMMAND_RPC_GET_ALTERNATE_CHAINS::chain_info{epee::string_tools::pod_to_hex(get_block_hash(i.first.bl)), i.first.height, i.second.size(), i.first.cumulative_difficulty, {}, std::string()});
+        res.chains.back().block_hashes.reserve(i.second.size());
+        for (const crypto::hash &block_id: i.second)
+          res.chains.back().block_hashes.push_back(epee::string_tools::pod_to_hex(block_id));
+        if (i.first.height < i.second.size())
+        {
+          res.status = "Error finding alternate chain attachment point";
+          return true;
+        }
+        cryptonote::block main_chain_parent_block;
+        try { main_chain_parent_block = m_core.get_blockchain_storage().get_db().get_block_from_height(i.first.height - i.second.size()); }
+        catch (const std::exception &e) { res.status = "Error finding alternate chain attachment point"; return true; }
+        res.chains.back().main_chain_parent_block = epee::string_tools::pod_to_hex(get_block_hash(main_chain_parent_block));
       }
       res.status = CORE_RPC_STATUS_OK;
     }