Updated to work with block major version 4.

Author: sumlnoether

src/cryptonote_config.h

@@ -8,6 +8,7 @@
 #define BLOCK_MAJOR_VERSION_1                           1
 #define BLOCK_MAJOR_VERSION_2                           2
 #define BLOCK_MAJOR_VERSION_3                           3
+#define BLOCK_MAJOR_VERSION_4                           4
 
 #define COIN                                            ((uint64_t)100000000) // pow(10, 8)
 #define DEFAULT_FEE                                     ((uint64_t)1000000) // pow(10, 6)

src/cryptonote_core/cryptonote_basic.h

@@ -456,7 +456,7 @@ namespace cryptonote
 
     BEGIN_SERIALIZE()
       VARINT_FIELD(major_version)
-      if(major_version > BLOCK_MAJOR_VERSION_3) return false;
+      if(major_version > BLOCK_MAJOR_VERSION_4) return false;
       VARINT_FIELD(minor_version)
       if (BLOCK_MAJOR_VERSION_1 == major_version)
       {

src/cryptonote_core/cryptonote_format_utils.cpp

@@ -772,7 +772,13 @@ namespace cryptonote
     blobdata bd;
     if(!get_bytecoin_block_hashing_blob(b, bd))
       return false;
-    crypto::cn_slow_hash(bd.data(), bd.size(), res);
+    if (b.major_version == BLOCK_MAJOR_VERSION_3) {
+      crypto::cn_slow_hash(bd.data(), bd.size(), res);
+    }
+    else if (b.major_version == BLOCK_MAJOR_VERSION_4) {
+      // TODO: Integrate the Cryptonight v7 variant. (OPTIONAL)
+      // This is not required for the node-cryptonote-utils package.
+    }
     return true;
   }
   //---------------------------------------------------------------
@@ -860,7 +866,7 @@ namespace cryptonote
   //---------------------------------------------------------------
   bool check_proof_of_work_v2(const block& bl, difficulty_type current_diffic, crypto::hash& proof_of_work)
   {
-    if (BLOCK_MAJOR_VERSION_2 != bl.major_version || BLOCK_MAJOR_VERSION_3 != bl.major_version)
+    if (BLOCK_MAJOR_VERSION_2 != bl.major_version || BLOCK_MAJOR_VERSION_3 != bl.major_version || BLOCK_MAJOR_VERSION_4 != bl.major_version)
       return false;
 
     if (!get_bytecoin_block_longhash(bl, proof_of_work))
@@ -901,6 +907,7 @@ namespace cryptonote
     case BLOCK_MAJOR_VERSION_1: return check_proof_of_work_v1(bl, current_diffic, proof_of_work);
     case BLOCK_MAJOR_VERSION_2: return check_proof_of_work_v2(bl, current_diffic, proof_of_work);
     case BLOCK_MAJOR_VERSION_3: return check_proof_of_work_v2(bl, current_diffic, proof_of_work);
+    case BLOCK_MAJOR_VERSION_4: return check_proof_of_work_v2(bl, current_diffic, proof_of_work);
     }
 
     CHECK_AND_ASSERT_MES(false, false, "unknown block major version: " << bl.major_version << "." << bl.minor_version);

src/main.cc

@@ -182,6 +182,15 @@ NAN_METHOD(construct_block_blob) {
         if (!mergeBlocks(parent_block, b, std::vector<crypto::hash>()))
             return THROW_ERROR_EXCEPTION("Failed to postprocess mining block");
     }
+    if (b.major_version == BLOCK_MAJOR_VERSION_4) {
+      block parent_block;
+      b.parent_block.nonce = nonce;
+      if (!construct_parent_block(b, parent_block))
+        return THROW_ERROR_EXCEPTION("Failed to construct parent block");
+
+      if (!mergeBlocks(parent_block, b, std::vector<crypto::hash>()))
+        return THROW_ERROR_EXCEPTION("Failed to postprocess mining block");
+    }
 
     if (!block_to_blob(b, output))
         return THROW_ERROR_EXCEPTION("Failed to convert block to blob");