hardfork: add a get_ideal_version(uint64_t) function

It returns the ideal version for a given height, which is
based on the minimum height for a fork, disregarding votes

2 files changed, 18 insertions, 0 deletions

diff --git a/src/cryptonote_core/hardfork.cpp b/src/cryptonote_core/hardfork.cpp
index 45d623ca9..edc2f33a9 100644
--- a/src/cryptonote_core/hardfork.cpp
+++ b/src/cryptonote_core/hardfork.cpp
@@ -337,6 +337,17 @@ uint8_t HardFork::get_ideal_version() const
   return heights.back().version;
 }
 
+uint8_t HardFork::get_ideal_version(uint64_t height) const
+{
+  CRITICAL_REGION_LOCAL(lock);
+  for (unsigned int n = heights.size() - 1; n > 0; --n) {
+    if (height >= heights[n].height) {
+      return heights[n].version;
+    }
+  }
+  return original_version;
+}
+
 bool HardFork::get_voting_info(uint8_t version, uint32_t &window, uint32_t &votes, uint32_t &threshold, uint8_t &voting) const
 {
   CRITICAL_REGION_LOCAL(lock);
diff --git a/src/cryptonote_core/hardfork.h b/src/cryptonote_core/hardfork.h
index f44d20f8e..6800749da 100644
--- a/src/cryptonote_core/hardfork.h
+++ b/src/cryptonote_core/hardfork.h
@@ -168,6 +168,13 @@ namespace cryptonote
     uint8_t get_ideal_version() const;
 
     /**
+     * @brief returns the "ideal" version for a given height
+     *
+     * @param height height of the block to check
+     */
+    uint8_t get_ideal_version(uint64_t height) const;
+
+    /**
      * @brief returns the current version
      *
      * This is the latest version that's past its trigger date and had enough votes