using System;
using System.IO;
-using System.Linq;
using System.Collections.Concurrent;
using SQLite.Net;
-using SQLite.Net.Attributes;
using SQLite.Net.Interop;
using SQLite.Net.Platform.Generic;
-using SQLiteNetExtensions.Attributes;
using System.Collections.Generic;
-using System.Diagnostics.Contracts;
using System.Text;
namespace Novacoin
{
- [Table("ChainState")]
- public class ChainState
- {
- [PrimaryKey, AutoIncrement]
- public long itemId { get; set; }
-
- /// <summary>
- /// Hash of top block in the best chain
- /// </summary>
- public byte[] HashBestChain { get; set; }
-
- /// <summary>
- /// Total trust score of best chain
- /// </summary>
- public byte[] BestChainTrust { get; set; }
-
- public uint nBestHeight { get; set;}
-
- [Ignore]
- public uint256 nBestChainTrust
- {
- get { return BestChainTrust; }
- set { BestChainTrust = value; }
- }
-
- [Ignore]
- public uint256 nHashBestChain
- {
- get { return HashBestChain; }
- set { HashBestChain = value; }
- }
- }
-
- [Table("BlockStorage")]
- public class CBlockStoreItem : IBlockStorageItem
- {
- #region IBlockStorageItem
- /// <summary>
- /// Item ID in the database
- /// </summary>
- [PrimaryKey, AutoIncrement]
- public long ItemID { get; set; }
-
- /// <summary>
- /// PBKDF2+Salsa20 of block hash
- /// </summary>
- [Unique]
- public byte[] Hash { get; set; }
-
- /// <summary>
- /// Version of block schema
- /// </summary>
- [Column("nVersion")]
- public uint nVersion { get; set; }
-
- /// <summary>
- /// Previous block hash.
- /// </summary>
- [Column("prevHash")]
- public byte[] prevHash { get; set; }
-
- /// <summary>
- /// Merkle root hash.
- /// </summary>
- [Column("merkleRoot")]
- public byte[] merkleRoot { get; set; }
-
- /// <summary>
- /// Block timestamp.
- /// </summary>
- [Column("nTime")]
- public uint nTime { get; set; }
-
- /// <summary>
- /// Compressed difficulty representation.
- /// </summary>
- [Column("nBits")]
- public uint nBits { get; set; }
-
- /// <summary>
- /// Nonce counter.
- /// </summary>
- [Column("nNonce")]
- public uint nNonce { get; set; }
-
- /// <summary>
- /// Next block hash.
- /// </summary>
- [Column("nextHash")]
- public byte[] nextHash { get; set; }
-
- /// <summary>
- /// Block type flags
- /// </summary>
- [Column("BlockTypeFlag")]
- public BlockType BlockTypeFlag { get; set; }
-
- /// <summary>
- /// Stake modifier
- /// </summary>
- [Column("nStakeModifier")]
- public long nStakeModifier { get; set; }
-
- /// <summary>
- /// Proof-of-Stake hash
- /// </summary>
- [Column("hashProofOfStake")]
- public byte[] hashProofOfStake { get; set; }
-
- /// <summary>
- /// Stake generation outpoint.
- /// </summary>
- [Column("prevoutStake")]
- public byte[] prevoutStake { get; set; }
-
- /// <summary>
- /// Stake generation time.
- /// </summary>
- [Column("nStakeTime")]
- public uint nStakeTime { get; set; }
-
- /// <summary>
- /// Block height, encoded in VarInt format
- /// </summary>
- [Column("nHeight")]
- public uint nHeight { get; set; }
-
- /// <summary>
- /// Chain trust score, serialized and trimmed uint256 representation.
- /// </summary>
- [Column("ChainTrust")]
- public byte[] ChainTrust { get; set; }
-
- /// <summary>
- /// Block position in file, encoded in VarInt format
- /// </summary>
- [Column("BlockPos")]
- public byte[] BlockPos { get; set; }
-
- /// <summary>
- /// Block size in bytes, encoded in VarInt format
- /// </summary>
- [Column("BlockSize")]
- public byte[] BlockSize { get; set; }
- #endregion
-
- /// <summary>
- /// Accessor and mutator for BlockPos value.
- /// </summary>
- [Ignore]
- public long nBlockPos
- {
- get { return (long)VarInt.DecodeVarInt(BlockPos); }
- set { BlockPos = VarInt.EncodeVarInt(value); }
- }
-
- /// <summary>
- /// Accessor and mutator for BlockSize value.
- /// </summary>
- [Ignore]
- public int nBlockSize
- {
- get { return (int)VarInt.DecodeVarInt(BlockSize); }
- set { BlockSize = VarInt.EncodeVarInt(value); }
- }
-
- /// <summary>
- /// Fill database item with data from given block header.
- /// </summary>
- /// <param name="header">Block header</param>
- /// <returns>Header hash</returns>
- public uint256 FillHeader(CBlockHeader header)
- {
- uint256 _hash = header.Hash;
-
- Hash = _hash;
-
- nVersion = header.nVersion;
- prevHash = header.prevHash;
- merkleRoot = header.merkleRoot;
- nTime = header.nTime;
- nBits = header.nBits;
- nNonce = header.nNonce;
-
- return _hash;
- }
-
- /// <summary>
- /// Reconstruct block header from item data.
- /// </summary>
- public CBlockHeader BlockHeader
- {
- get
- {
- CBlockHeader header = new CBlockHeader();
-
- header.nVersion = nVersion;
- header.prevHash = prevHash;
- header.merkleRoot = merkleRoot;
- header.nTime = nTime;
- header.nBits = nBits;
- header.nNonce = nNonce;
-
- return header;
- }
- }
-
- /// <summary>
- /// Read block from file.
- /// </summary>
- /// <param name="reader">Stream with read access.</param>
- /// <param name="reader">CBlock reference.</param>
- /// <returns>Result</returns>
- public bool ReadFromFile(ref Stream reader, out CBlock block)
- {
- var buffer = new byte[nBlockSize];
- block = null;
-
- try
- {
- reader.Seek(nBlockPos, SeekOrigin.Begin);
-
- if (nBlockSize != reader.Read(buffer, 0, nBlockSize))
- {
- return false;
- }
-
- block = new CBlock(buffer);
-
- return true;
- }
- catch (IOException)
- {
- // I/O error
- return false;
- }
- catch (BlockException)
- {
- // Constructor exception
- return false;
- }
- }
-
- /// <summary>
- /// Writes given block to file and prepares cursor object for insertion into the database.
- /// </summary>
- /// <param name="writer">Stream with write access.</param>
- /// <param name="block">CBlock reference.</param>
- /// <returns>Result</returns>
- public bool WriteToFile(ref Stream writer, ref CBlock block)
- {
- try
- {
- byte[] blockBytes = block;
-
- var magicBytes = BitConverter.GetBytes(CBlockStore.nMagicNumber);
- var blkLenBytes = BitConverter.GetBytes(blockBytes.Length);
-
- // Seek to the end and then append magic bytes there.
- writer.Seek(0, SeekOrigin.End);
- writer.Write(magicBytes, 0, magicBytes.Length);
- writer.Write(blkLenBytes, 0, blkLenBytes.Length);
-
- // Save block size and current position in the block cursor fields.
- nBlockPos = writer.Position;
- nBlockSize = blockBytes.Length;
-
- // Write block and flush the stream.
- writer.Write(blockBytes, 0, blockBytes.Length);
- writer.Flush();
-
- return true;
- }
- catch (IOException)
- {
- // I/O error
- return false;
- }
- catch (Exception)
- {
- // Some serialization error
- return false;
- }
- }
-
- /// <summary>
- /// Previous block cursor
- /// </summary>
- [Ignore]
- public CBlockStoreItem prev
- {
- get { return CBlockStore.Instance.GetMapCursor(prevHash); }
- }
-
- /// <summary>
- /// Next block cursor
- /// </summary>
- [Ignore]
- public CBlockStoreItem next
- {
- get
- {
- if (nextHash == null)
- {
- return null;
- }
-
- return CBlockStore.Instance.GetMapCursor(nextHash);
- }
- set
- {
- nextHash = value.Hash;
-
- CBlockStore.Instance.UpdateMapCursor(this);
- }
- }
-
- [Ignore]
- bool IsInMainChain
- {
- get { return (next != null); }
- }
-
- /// <summary>
- /// STake modifier generation flag
- /// </summary>
- [Ignore]
- public bool GeneratedStakeModifier
- {
- get { return (BlockTypeFlag & BlockType.BLOCK_STAKE_MODIFIER) != 0; }
- }
-
- /// <summary>
- /// Stake entropy bit
- /// </summary>
- [Ignore]
- public uint StakeEntropyBit
- {
- get { return ((uint)(BlockTypeFlag & BlockType.BLOCK_STAKE_ENTROPY) >> 1); }
- }
-
- /// <summary>
- /// Sets stake modifier and flag.
- /// </summary>
- /// <param name="nModifier">New stake modifier.</param>
- /// <param name="fGeneratedStakeModifier">Set generation flag?</param>
- public void SetStakeModifier(long nModifier, bool fGeneratedStakeModifier)
- {
- nStakeModifier = nModifier;
- if (fGeneratedStakeModifier)
- BlockTypeFlag |= BlockType.BLOCK_STAKE_MODIFIER;
- }
-
- /// <summary>
- /// Set entropy bit.
- /// </summary>
- /// <param name="nEntropyBit">Entropy bit value (0 or 1).</param>
- /// <returns>False if value is our of range.</returns>
- public bool SetStakeEntropyBit(byte nEntropyBit)
- {
- if (nEntropyBit > 1)
- return false;
- BlockTypeFlag |= (nEntropyBit != 0 ? BlockType.BLOCK_STAKE_ENTROPY : 0);
- return true;
- }
-
- /// <summary>
- /// Set proof-of-stake flag.
- /// </summary>
- public void SetProofOfStake()
- {
- BlockTypeFlag |= BlockType.BLOCK_PROOF_OF_STAKE;
- }
-
- /// <summary>
- /// Block has no proof-of-stake flag.
- /// </summary>
- [Ignore]
- public bool IsProofOfWork
- {
- get { return (BlockTypeFlag & BlockType.BLOCK_PROOF_OF_STAKE) == 0; }
- }
-
- /// <summary>
- /// Block has proof-of-stake flag set.
- /// </summary>
- [Ignore]
- public bool IsProofOfStake
- {
- get { return (BlockTypeFlag & BlockType.BLOCK_PROOF_OF_STAKE) != 0; }
- }
-
- /// <summary>
- /// Block trust score.
- /// </summary>
- [Ignore]
- public uint256 nBlockTrust
- {
- get
- {
- uint256 nTarget = 0;
- nTarget.Compact = nBits;
-
- /* Old protocol */
- if (nTime < NetInfo.nChainChecksSwitchTime)
- {
- return IsProofOfStake ? (new uint256(1) << 256) / (nTarget + 1) : 1;
- }
-
- /* New protocol */
-
- // Calculate work amount for block
- var nPoWTrust = NetInfo.nPoWBase / (nTarget + 1);
-
- // Set nPowTrust to 1 if we are checking PoS block or PoW difficulty is too low
- nPoWTrust = (IsProofOfStake || !nPoWTrust) ? 1 : nPoWTrust;
-
- // Return nPoWTrust for the first 12 blocks
- if (prev == null || prev.nHeight < 12)
- return nPoWTrust;
-
- CBlockStoreItem currentIndex = prev;
-
- if (IsProofOfStake)
- {
- var nNewTrust = (new uint256(1) << 256) / (nTarget + 1);
-
- // Return 1/3 of score if parent block is not the PoW block
- if (!prev.IsProofOfWork)
- {
- return nNewTrust / 3;
- }
-
- int nPoWCount = 0;
-
- // Check last 12 blocks type
- while (prev.nHeight - currentIndex.nHeight < 12)
- {
- if (currentIndex.IsProofOfWork)
- {
- nPoWCount++;
- }
- currentIndex = currentIndex.prev;
- }
-
- // Return 1/3 of score if less than 3 PoW blocks found
- if (nPoWCount < 3)
- {
- return nNewTrust / 3;
- }
-
- return nNewTrust;
- }
- else
- {
- var nLastBlockTrust = prev.nChainTrust - prev.prev.nChainTrust;
-
- // Return nPoWTrust + 2/3 of previous block score if two parent blocks are not PoS blocks
- if (!prev.IsProofOfStake || !prev.prev.IsProofOfStake)
- {
- return nPoWTrust + (2 * nLastBlockTrust / 3);
- }
-
- int nPoSCount = 0;
-
- // Check last 12 blocks type
- while (prev.nHeight - currentIndex.nHeight < 12)
- {
- if (currentIndex.IsProofOfStake)
- {
- nPoSCount++;
- }
- currentIndex = currentIndex.prev;
- }
-
- // Return nPoWTrust + 2/3 of previous block score if less than 7 PoS blocks found
- if (nPoSCount < 7)
- {
- return nPoWTrust + (2 * nLastBlockTrust / 3);
- }
-
- nTarget.Compact = prev.nBits;
-
- if (!nTarget)
- {
- return 0;
- }
-
- var nNewTrust = (new uint256(1) << 256) / (nTarget + 1);
-
- // Return nPoWTrust + full trust score for previous block nBits
- return nPoWTrust + nNewTrust;
- }
- }
- }
-
- /// <summary>
- /// Stake modifier checksum.
- /// </summary>
- public uint nStakeModifierChecksum;
-
- /// <summary>
- /// Chain trust score
- /// </summary>
- [Ignore]
- public uint256 nChainTrust {
- get { return Interop.AppendWithZeros(ChainTrust); }
- set { ChainTrust = Interop.TrimArray(value); }
- }
-
- public long nMint { get; internal set; }
- public long nMoneySupply { get; internal set; }
- }
-
- /// <summary>
- /// Block type.
- /// </summary>
- public enum BlockType
- {
- BLOCK_PROOF_OF_STAKE = (1 << 0), // is proof-of-stake block
- BLOCK_STAKE_ENTROPY = (1 << 1), // entropy bit for stake modifier
- BLOCK_STAKE_MODIFIER = (1 << 2), // regenerated stake modifier
- };
-
- /// <summary>
- /// Transaction type.
- /// </summary>
- public enum TxFlags : byte
- {
- TX_COINBASE,
- TX_COINSTAKE,
- TX_USER
- }
-
- /// <summary>
- /// Output flags.
- /// </summary>
- public enum OutputFlags : byte
- {
- AVAILABLE, // Unspent output
- SPENT // Spent output
- }
-
- [Table("MerkleNodes")]
- public class CMerkleNode : IMerkleNode
- {
- #region IMerkleNode
- /// <summary>
- /// Node identifier
- /// </summary>
- [PrimaryKey, AutoIncrement]
- public long nMerkleNodeID { get; set; }
-
- /// <summary>
- /// Reference to parent block database item.
- /// </summary>
- [ForeignKey(typeof(CBlockStoreItem), Name = "ItemId")]
- public long nParentBlockID { get; set; }
-
- /// <summary>
- /// Transaction type flag
- /// </summary>
- [Column("TransactionFlags")]
- public TxFlags TransactionFlags { get; set; }
-
- /// <summary>
- /// Transaction hash
- /// </summary>
- [Column("TransactionHash")]
- public byte[] TransactionHash { get; set; }
-
- /// <summary>
- /// Transaction offset from the beginning of block header, encoded in VarInt format.
- /// </summary>
- [Column("TxOffset")]
- public byte[] TxOffset { get; set; }
-
- /// <summary>
- /// Transaction size, encoded in VarInt format.
- /// </summary>
- [Column("TxSize")]
- public byte[] TxSize { get; set; }
- #endregion
-
- /// <summary>
- /// Read transaction from file.
- /// </summary>
- /// <param name="reader">Stream with read access.</param>
- /// <param name="tx">CTransaction reference.</param>
- /// <returns>Result</returns>
- public bool ReadFromFile(ref Stream reader, long nBlockPos, out CTransaction tx)
- {
- var buffer = new byte[CTransaction.nMaxTxSize];
-
- tx = null;
-
- try
- {
- reader.Seek(nBlockPos + nTxOffset, SeekOrigin.Begin); // Seek to transaction offset
-
- if (nTxSize != reader.Read(buffer, 0, nTxSize))
- {
- return false;
- }
-
- tx = new CTransaction(buffer);
-
- return true;
- }
- catch (IOException)
- {
- // I/O error
- return false;
- }
- catch (TransactionConstructorException)
- {
- // Constructor error
- return false;
- }
- }
-
- /// <summary>
- /// Transaction offset accessor
- /// </summary>
- [Ignore]
- public long nTxOffset
- {
- get { return (long) VarInt.DecodeVarInt(TxOffset); }
- private set { TxOffset = VarInt.EncodeVarInt(value); }
- }
-
- /// <summary>
- /// Transaction size accessor
- /// </summary>
- [Ignore]
- public int nTxSize
- {
- get { return (int)VarInt.DecodeVarInt(TxSize); }
- private set { TxSize = VarInt.EncodeVarInt(value); }
- }
-
- public CMerkleNode(CTransaction tx)
- {
- nTxOffset = -1;
- nParentBlockID = -1;
-
- nTxSize = tx.Size;
- TransactionHash = tx.Hash;
-
- if (tx.IsCoinBase)
- {
- TransactionFlags |= TxFlags.TX_COINBASE;
- }
- else if (tx.IsCoinStake)
- {
- TransactionFlags |= TxFlags.TX_COINSTAKE;
- }
- else
- {
- TransactionFlags |= TxFlags.TX_USER;
- }
- }
-
- public CMerkleNode(long nBlockId, long nOffset, CTransaction tx)
- {
- nParentBlockID = nBlockId;
-
- nTxOffset = nOffset;
- nTxSize = tx.Size;
- TransactionHash = tx.Hash;
-
- if (tx.IsCoinBase)
- {
- TransactionFlags |= TxFlags.TX_COINBASE;
- }
- else if (tx.IsCoinStake)
- {
- TransactionFlags |= TxFlags.TX_COINSTAKE;
- }
- else
- {
- TransactionFlags |= TxFlags.TX_USER;
- }
- }
-
- }
-
- [Table("Outputs")]
- public class TxOutItem : ITxOutItem
- {
- /// <summary>
- /// Reference to transaction item.
- /// </summary>
- [ForeignKey(typeof(CMerkleNode), Name = "nMerkleNodeID")]
- public long nMerkleNodeID { get; set; }
-
- /// <summary>
- /// Output flags
- /// </summary>
- public OutputFlags outputFlags { get; set; }
-
- /// <summary>
- /// Output number in VarInt format.
- /// </summary>
- public byte[] OutputNumber { get; set; }
-
- /// <summary>
- /// Output value in VarInt format.
- /// </summary>
- public byte[] OutputValue { get; set; }
-
- /// <summary>
- /// Second half of script which contains spending instructions.
- /// </summary>
- public byte[] scriptPubKey { get; set; }
-
- /// <summary>
- /// Getter for output number.
- /// </summary>
- [Ignore]
- public uint nOut
- {
- get { return (uint)VarInt.DecodeVarInt(OutputNumber); }
- private set { OutputNumber = VarInt.EncodeVarInt(value); }
- }
-
- /// <summary>
- /// Getter for output value.
- /// </summary>
- [Ignore]
- public ulong nValue
- {
- get { return VarInt.DecodeVarInt(OutputValue); }
- private set { OutputValue = VarInt.EncodeVarInt(value); }
- }
-
- /// <summary>
- /// Getter ans setter for IsSpent flag.
- /// </summary>
- [Ignore]
- public bool IsSpent
- {
- get { return (outputFlags & OutputFlags.SPENT) != 0; }
- set { outputFlags |= value ? OutputFlags.SPENT : OutputFlags.AVAILABLE; }
- }
-
- public TxOutItem(CTxOut o, uint nOut)
- {
- nValue = o.nValue;
- scriptPubKey = o.scriptPubKey;
- this.nOut = nOut;
- }
- }
-
public class CBlockStore : IDisposable
{
public const uint nMagicNumber = 0xe5e9e8e4;
return false;
}
- interface InputsJoin : ITxOutItem
- {
- byte[] TransactionHash { get; set; }
- }
public bool FetchInputs(CTransaction tx, ref Dictionary<COutPoint, TxOutItem> queued, ref Dictionary<COutPoint, TxOutItem> inputs, bool IsBlock, out bool Invalid)
{
queuedMerkleNodes.Add(hashTx, mNode);
var outKey = new COutPoint(hashTx, i);
- var outData = new TxOutItem(tx.vout[i], i);
+ var outData = new TxOutItem();
+
+ outData.nValue = tx.vout[i].nValue;
+ outData.scriptPubKey = tx.vout[i].scriptPubKey;
+ outData.nOut = i;
+
outData.IsSpent = false;
return cursor.ReadFromFile(ref fStreamReadWrite, out block);
}
-
- /// <summary>
- /// Interface for join
- /// </summary>
- interface IBlockJoinMerkle : IBlockStorageItem, IMerkleNode
- {
- }
-
/// <summary>
/// Get block and transaction by transaction hash.
/// </summary>
/// <param name="TxID">Transaction hash</param>
/// <param name="block">Block reference</param>
- /// <param name="tx">Transaction reference</param>
/// <param name="nBlockPos">Block position reference</param>
- /// <param name="nTxPos">Transaction position reference</param>
/// <returns>Result of operation</returns>
- public bool GetBlockByTransactionID(uint256 TxID, ref CBlock block, ref CTransaction tx, ref long nBlockPos, ref long nTxPos)
+ public bool GetBlockByTransactionID(uint256 TxID, ref CBlock block, ref long nBlockPos)
{
- var queryResult = dbConn.Query<IBlockJoinMerkle>("select * from [BlockStorage] b left join [MerkleNodes] m on (b.[ItemID] = m.[nParentBlockID]) where m.[TransactionHash] = ?", (byte[])TxID);
+ var queryResult = dbConn.Query<CBlockStoreItem>("select b.* from [BlockStorage] b left join [MerkleNodes] m on (b.[ItemID] = m.[nParentBlockID]) where m.[TransactionHash] = ?", (byte[])TxID);
if (queryResult.Count == 1)
{
- CBlockStoreItem blockCursor = (CBlockStoreItem) queryResult[0];
- CMerkleNode txCursor = (CMerkleNode)queryResult[0];
-
- var reader = new BinaryReader(fStreamReadWrite).BaseStream;
-
- if (!txCursor.ReadFromFile(ref reader, blockCursor.nBlockPos, out tx))
- {
- return false; // Unable to read transaction
- }
+ CBlockStoreItem blockCursor = queryResult[0];
- return blockCursor.ReadFromFile(ref reader, out block);
+ return blockCursor.ReadFromFile(ref fStreamReadWrite, out block);
}
// Tx not found
+++ /dev/null
-\feffusing System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-using SQLite.Net;
-using SQLite.Net.Attributes;
-using SQLite.Net.Interop;
-using SQLite.Net.Platform.Generic;
-using SQLiteNetExtensions.Attributes;
-using System.Diagnostics.Contracts;
-
-namespace Novacoin
-{
- /// <summary>
- /// Block headers table
- /// </summary>
- public interface IBlockStorageItem
- {
- /// <summary>
- /// Item ID in the database
- /// </summary>
- long ItemID { get; set; }
-
- /// <summary>
- /// PBKDF2+Salsa20 of block hash
- /// </summary>
- byte[] Hash { get; set; }
-
- /// <summary>
- /// Version of block schema
- /// </summary>
- uint nVersion { get; set; }
-
- /// <summary>
- /// Previous block hash.
- /// </summary>
- byte[] prevHash { get; set; }
-
- /// <summary>
- /// Merkle root hash.
- /// </summary>
- byte[] merkleRoot { get; set; }
-
- /// <summary>
- /// Block timestamp.
- /// </summary>
- uint nTime { get; set; }
-
- /// <summary>
- /// Compressed difficulty representation.
- /// </summary>
- uint nBits { get; set; }
-
- /// <summary>
- /// Nonce counter.
- /// </summary>
- uint nNonce { get; set; }
-
- /// <summary>
- /// Next block hash.
- /// </summary>
- byte[] nextHash { get; set; }
-
- /// <summary>
- /// Block type flags
- /// </summary>
- BlockType BlockTypeFlag { get; set; }
-
- /// <summary>
- /// Stake modifier
- /// </summary>
- long nStakeModifier { get; set; }
-
- /// <summary>
- /// Proof-of-Stake hash
- /// </summary>
- byte[] hashProofOfStake { get; set; }
-
- /// <summary>
- /// Stake generation outpoint.
- /// </summary>
- byte[] prevoutStake { get; set; }
-
- /// <summary>
- /// Stake generation time.
- /// </summary>
- uint nStakeTime { get; set; }
-
- /// <summary>
- /// Block height
- /// </summary>
- uint nHeight { get; set; }
-
- /// <summary>
- /// Block position in file
- /// </summary>
- byte[] BlockPos { get; set; }
-
- /// <summary>
- /// Block size in bytes
- /// </summary>
- byte[] BlockSize { get; set; }
- };
-
- public interface IMerkleNode
- {
- /// <summary>
- /// Node identifier
- /// </summary>
- long nMerkleNodeID { get; set; }
-
- /// <summary>
- /// Reference to parent block database item.
- /// </summary>
- long nParentBlockID { get; set; }
-
- /// <summary>
- /// Transaction type flag
- /// </summary>
- TxFlags TransactionFlags { get; set; }
-
- /// <summary>
- /// Transaction hash
- /// </summary>
- byte[] TransactionHash { get; set; }
-
- /// <summary>
- /// Transaction offset from the beginning of block header, encoded in VarInt format.
- /// </summary>
- byte[] TxOffset { get; set; }
-
- /// <summary>
- /// Transaction size, encoded in VarInt format.
- /// </summary>
- byte[] TxSize { get; set; }
- }
-
- public interface ITxOutItem
- {
- /// <summary>
- /// Reference to transaction item.
- /// </summary>
- long nMerkleNodeID { get; set; }
-
- /// <summary>
- /// Output flags
- /// </summary>
- OutputFlags outputFlags { get; set; }
-
- /// <summary>
- /// Output number in VarInt format.
- /// </summary>
- byte[] OutputNumber { get; set; }
-
- /// <summary>
- /// Output value in VarInt format.
- /// </summary>
- byte[] OutputValue { get; set; }
-
- /// <summary>
- /// Second half of script which contains spending instructions.
- /// </summary>
- byte[] scriptPubKey { get; set; }
-
- /// <summary>
- /// Getter for output number.
- /// </summary>
- uint nOut { get; }
-
- /// <summary>
- /// Getter for output value.
- /// </summary>
- ulong nValue { get; }
-
- /// <summary>
- /// Getter ans setter for IsSpent flag.
- /// </summary>
- bool IsSpent { get; set; }
- }
-}
--- /dev/null
+\feffusing SQLite.Net.Attributes;
+using SQLiteNetExtensions.Attributes;
+using System;
+using System.IO;
+
+namespace Novacoin
+{
+ [Table("ChainState")]
+ public class ChainState
+ {
+ [PrimaryKey, AutoIncrement]
+ public long itemId { get; set; }
+
+ /// <summary>
+ /// Hash of top block in the best chain
+ /// </summary>
+ public byte[] HashBestChain { get; set; }
+
+ /// <summary>
+ /// Total trust score of best chain
+ /// </summary>
+ public byte[] BestChainTrust { get; set; }
+
+ public uint nBestHeight { get; set; }
+
+ [Ignore]
+ public uint256 nBestChainTrust
+ {
+ get { return BestChainTrust; }
+ set { BestChainTrust = value; }
+ }
+
+ [Ignore]
+ public uint256 nHashBestChain
+ {
+ get { return HashBestChain; }
+ set { HashBestChain = value; }
+ }
+ }
+
+ [Table("BlockStorage")]
+ public class CBlockStoreItem
+ {
+ #region IBlockStorageItem
+ /// <summary>
+ /// Item ID in the database
+ /// </summary>
+ [PrimaryKey, AutoIncrement]
+ public long ItemID { get; set; }
+
+ /// <summary>
+ /// PBKDF2+Salsa20 of block hash
+ /// </summary>
+ [Unique]
+ public byte[] Hash { get; set; }
+
+ /// <summary>
+ /// Version of block schema
+ /// </summary>
+ [Column("nVersion")]
+ public uint nVersion { get; set; }
+
+ /// <summary>
+ /// Previous block hash.
+ /// </summary>
+ [Column("prevHash")]
+ public byte[] prevHash { get; set; }
+
+ /// <summary>
+ /// Merkle root hash.
+ /// </summary>
+ [Column("merkleRoot")]
+ public byte[] merkleRoot { get; set; }
+
+ /// <summary>
+ /// Block timestamp.
+ /// </summary>
+ [Column("nTime")]
+ public uint nTime { get; set; }
+
+ /// <summary>
+ /// Compressed difficulty representation.
+ /// </summary>
+ [Column("nBits")]
+ public uint nBits { get; set; }
+
+ /// <summary>
+ /// Nonce counter.
+ /// </summary>
+ [Column("nNonce")]
+ public uint nNonce { get; set; }
+
+ /// <summary>
+ /// Next block hash.
+ /// </summary>
+ [Column("nextHash")]
+ public byte[] nextHash { get; set; }
+
+ /// <summary>
+ /// Block type flags
+ /// </summary>
+ [Column("BlockTypeFlag")]
+ public BlockType BlockTypeFlag { get; set; }
+
+ /// <summary>
+ /// Stake modifier
+ /// </summary>
+ [Column("nStakeModifier")]
+ public long nStakeModifier { get; set; }
+
+ /// <summary>
+ /// Proof-of-Stake hash
+ /// </summary>
+ [Column("hashProofOfStake")]
+ public byte[] hashProofOfStake { get; set; }
+
+ /// <summary>
+ /// Stake generation outpoint.
+ /// </summary>
+ [Column("prevoutStake")]
+ public byte[] prevoutStake { get; set; }
+
+ /// <summary>
+ /// Stake generation time.
+ /// </summary>
+ [Column("nStakeTime")]
+ public uint nStakeTime { get; set; }
+
+ /// <summary>
+ /// Block height, encoded in VarInt format
+ /// </summary>
+ [Column("nHeight")]
+ public uint nHeight { get; set; }
+
+ /// <summary>
+ /// Chain trust score, serialized and trimmed uint256 representation.
+ /// </summary>
+ [Column("ChainTrust")]
+ public byte[] ChainTrust { get; set; }
+
+ /// <summary>
+ /// Block position in file, encoded in VarInt format
+ /// </summary>
+ [Column("BlockPos")]
+ public byte[] BlockPos { get; set; }
+
+ /// <summary>
+ /// Block size in bytes, encoded in VarInt format
+ /// </summary>
+ [Column("BlockSize")]
+ public byte[] BlockSize { get; set; }
+ #endregion
+
+ /// <summary>
+ /// Accessor and mutator for BlockPos value.
+ /// </summary>
+ [Ignore]
+ public long nBlockPos
+ {
+ get { return (long)VarInt.DecodeVarInt(BlockPos); }
+ set { BlockPos = VarInt.EncodeVarInt(value); }
+ }
+
+ /// <summary>
+ /// Accessor and mutator for BlockSize value.
+ /// </summary>
+ [Ignore]
+ public int nBlockSize
+ {
+ get { return (int)VarInt.DecodeVarInt(BlockSize); }
+ set { BlockSize = VarInt.EncodeVarInt(value); }
+ }
+
+ /// <summary>
+ /// Fill database item with data from given block header.
+ /// </summary>
+ /// <param name="header">Block header</param>
+ /// <returns>Header hash</returns>
+ public uint256 FillHeader(CBlockHeader header)
+ {
+ uint256 _hash = header.Hash;
+
+ Hash = _hash;
+
+ nVersion = header.nVersion;
+ prevHash = header.prevHash;
+ merkleRoot = header.merkleRoot;
+ nTime = header.nTime;
+ nBits = header.nBits;
+ nNonce = header.nNonce;
+
+ return _hash;
+ }
+
+ /// <summary>
+ /// Reconstruct block header from item data.
+ /// </summary>
+ public CBlockHeader BlockHeader
+ {
+ get
+ {
+ CBlockHeader header = new CBlockHeader();
+
+ header.nVersion = nVersion;
+ header.prevHash = prevHash;
+ header.merkleRoot = merkleRoot;
+ header.nTime = nTime;
+ header.nBits = nBits;
+ header.nNonce = nNonce;
+
+ return header;
+ }
+ }
+
+ /// <summary>
+ /// Read block from file.
+ /// </summary>
+ /// <param name="reader">Stream with read access.</param>
+ /// <param name="reader">CBlock reference.</param>
+ /// <returns>Result</returns>
+ public bool ReadFromFile(ref Stream reader, out CBlock block)
+ {
+ var buffer = new byte[nBlockSize];
+ block = null;
+
+ try
+ {
+ reader.Seek(nBlockPos, SeekOrigin.Begin);
+
+ if (nBlockSize != reader.Read(buffer, 0, nBlockSize))
+ {
+ return false;
+ }
+
+ block = new CBlock(buffer);
+
+ return true;
+ }
+ catch (IOException)
+ {
+ // I/O error
+ return false;
+ }
+ catch (BlockException)
+ {
+ // Constructor exception
+ return false;
+ }
+ }
+
+ /// <summary>
+ /// Writes given block to file and prepares cursor object for insertion into the database.
+ /// </summary>
+ /// <param name="writer">Stream with write access.</param>
+ /// <param name="block">CBlock reference.</param>
+ /// <returns>Result</returns>
+ public bool WriteToFile(ref Stream writer, ref CBlock block)
+ {
+ try
+ {
+ byte[] blockBytes = block;
+
+ var magicBytes = BitConverter.GetBytes(CBlockStore.nMagicNumber);
+ var blkLenBytes = BitConverter.GetBytes(blockBytes.Length);
+
+ // Seek to the end and then append magic bytes there.
+ writer.Seek(0, SeekOrigin.End);
+ writer.Write(magicBytes, 0, magicBytes.Length);
+ writer.Write(blkLenBytes, 0, blkLenBytes.Length);
+
+ // Save block size and current position in the block cursor fields.
+ nBlockPos = writer.Position;
+ nBlockSize = blockBytes.Length;
+
+ // Write block and flush the stream.
+ writer.Write(blockBytes, 0, blockBytes.Length);
+ writer.Flush();
+
+ return true;
+ }
+ catch (IOException)
+ {
+ // I/O error
+ return false;
+ }
+ catch (Exception)
+ {
+ // Some serialization error
+ return false;
+ }
+ }
+
+ /// <summary>
+ /// Previous block cursor
+ /// </summary>
+ [Ignore]
+ public CBlockStoreItem prev
+ {
+ get { return CBlockStore.Instance.GetMapCursor(prevHash); }
+ }
+
+ /// <summary>
+ /// Next block cursor
+ /// </summary>
+ [Ignore]
+ public CBlockStoreItem next
+ {
+ get
+ {
+ if (nextHash == null)
+ {
+ return null;
+ }
+
+ return CBlockStore.Instance.GetMapCursor(nextHash);
+ }
+ set
+ {
+ nextHash = value.Hash;
+
+ CBlockStore.Instance.UpdateMapCursor(this);
+ }
+ }
+
+ [Ignore]
+ bool IsInMainChain
+ {
+ get { return (next != null); }
+ }
+
+ /// <summary>
+ /// STake modifier generation flag
+ /// </summary>
+ [Ignore]
+ public bool GeneratedStakeModifier
+ {
+ get { return (BlockTypeFlag & BlockType.BLOCK_STAKE_MODIFIER) != 0; }
+ }
+
+ /// <summary>
+ /// Stake entropy bit
+ /// </summary>
+ [Ignore]
+ public uint StakeEntropyBit
+ {
+ get { return ((uint)(BlockTypeFlag & BlockType.BLOCK_STAKE_ENTROPY) >> 1); }
+ }
+
+ /// <summary>
+ /// Sets stake modifier and flag.
+ /// </summary>
+ /// <param name="nModifier">New stake modifier.</param>
+ /// <param name="fGeneratedStakeModifier">Set generation flag?</param>
+ public void SetStakeModifier(long nModifier, bool fGeneratedStakeModifier)
+ {
+ nStakeModifier = nModifier;
+ if (fGeneratedStakeModifier)
+ BlockTypeFlag |= BlockType.BLOCK_STAKE_MODIFIER;
+ }
+
+ /// <summary>
+ /// Set entropy bit.
+ /// </summary>
+ /// <param name="nEntropyBit">Entropy bit value (0 or 1).</param>
+ /// <returns>False if value is our of range.</returns>
+ public bool SetStakeEntropyBit(byte nEntropyBit)
+ {
+ if (nEntropyBit > 1)
+ return false;
+ BlockTypeFlag |= (nEntropyBit != 0 ? BlockType.BLOCK_STAKE_ENTROPY : 0);
+ return true;
+ }
+
+ /// <summary>
+ /// Set proof-of-stake flag.
+ /// </summary>
+ public void SetProofOfStake()
+ {
+ BlockTypeFlag |= BlockType.BLOCK_PROOF_OF_STAKE;
+ }
+
+ /// <summary>
+ /// Block has no proof-of-stake flag.
+ /// </summary>
+ [Ignore]
+ public bool IsProofOfWork
+ {
+ get { return (BlockTypeFlag & BlockType.BLOCK_PROOF_OF_STAKE) == 0; }
+ }
+
+ /// <summary>
+ /// Block has proof-of-stake flag set.
+ /// </summary>
+ [Ignore]
+ public bool IsProofOfStake
+ {
+ get { return (BlockTypeFlag & BlockType.BLOCK_PROOF_OF_STAKE) != 0; }
+ }
+
+ /// <summary>
+ /// Block trust score.
+ /// </summary>
+ [Ignore]
+ public uint256 nBlockTrust
+ {
+ get
+ {
+ uint256 nTarget = 0;
+ nTarget.Compact = nBits;
+
+ /* Old protocol */
+ if (nTime < NetInfo.nChainChecksSwitchTime)
+ {
+ return IsProofOfStake ? (new uint256(1) << 256) / (nTarget + 1) : 1;
+ }
+
+ /* New protocol */
+
+ // Calculate work amount for block
+ var nPoWTrust = NetInfo.nPoWBase / (nTarget + 1);
+
+ // Set nPowTrust to 1 if we are checking PoS block or PoW difficulty is too low
+ nPoWTrust = (IsProofOfStake || !nPoWTrust) ? 1 : nPoWTrust;
+
+ // Return nPoWTrust for the first 12 blocks
+ if (prev == null || prev.nHeight < 12)
+ return nPoWTrust;
+
+ CBlockStoreItem currentIndex = prev;
+
+ if (IsProofOfStake)
+ {
+ var nNewTrust = (new uint256(1) << 256) / (nTarget + 1);
+
+ // Return 1/3 of score if parent block is not the PoW block
+ if (!prev.IsProofOfWork)
+ {
+ return nNewTrust / 3;
+ }
+
+ int nPoWCount = 0;
+
+ // Check last 12 blocks type
+ while (prev.nHeight - currentIndex.nHeight < 12)
+ {
+ if (currentIndex.IsProofOfWork)
+ {
+ nPoWCount++;
+ }
+ currentIndex = currentIndex.prev;
+ }
+
+ // Return 1/3 of score if less than 3 PoW blocks found
+ if (nPoWCount < 3)
+ {
+ return nNewTrust / 3;
+ }
+
+ return nNewTrust;
+ }
+ else
+ {
+ var nLastBlockTrust = prev.nChainTrust - prev.prev.nChainTrust;
+
+ // Return nPoWTrust + 2/3 of previous block score if two parent blocks are not PoS blocks
+ if (!prev.IsProofOfStake || !prev.prev.IsProofOfStake)
+ {
+ return nPoWTrust + (2 * nLastBlockTrust / 3);
+ }
+
+ int nPoSCount = 0;
+
+ // Check last 12 blocks type
+ while (prev.nHeight - currentIndex.nHeight < 12)
+ {
+ if (currentIndex.IsProofOfStake)
+ {
+ nPoSCount++;
+ }
+ currentIndex = currentIndex.prev;
+ }
+
+ // Return nPoWTrust + 2/3 of previous block score if less than 7 PoS blocks found
+ if (nPoSCount < 7)
+ {
+ return nPoWTrust + (2 * nLastBlockTrust / 3);
+ }
+
+ nTarget.Compact = prev.nBits;
+
+ if (!nTarget)
+ {
+ return 0;
+ }
+
+ var nNewTrust = (new uint256(1) << 256) / (nTarget + 1);
+
+ // Return nPoWTrust + full trust score for previous block nBits
+ return nPoWTrust + nNewTrust;
+ }
+ }
+ }
+
+ /// <summary>
+ /// Stake modifier checksum.
+ /// </summary>
+ public uint nStakeModifierChecksum;
+
+ /// <summary>
+ /// Chain trust score
+ /// </summary>
+ [Ignore]
+ public uint256 nChainTrust
+ {
+ get { return Interop.AppendWithZeros(ChainTrust); }
+ set { ChainTrust = Interop.TrimArray(value); }
+ }
+
+ public long nMint { get; internal set; }
+ public long nMoneySupply { get; internal set; }
+ }
+
+ /// <summary>
+ /// Block type.
+ /// </summary>
+ public enum BlockType
+ {
+ BLOCK_PROOF_OF_STAKE = (1 << 0), // is proof-of-stake block
+ BLOCK_STAKE_ENTROPY = (1 << 1), // entropy bit for stake modifier
+ BLOCK_STAKE_MODIFIER = (1 << 2), // regenerated stake modifier
+ };
+
+ /// <summary>
+ /// Transaction type.
+ /// </summary>
+ public enum TxFlags : byte
+ {
+ TX_COINBASE,
+ TX_COINSTAKE,
+ TX_USER
+ }
+
+ /// <summary>
+ /// Output flags.
+ /// </summary>
+ public enum OutputFlags : byte
+ {
+ AVAILABLE, // Unspent output
+ SPENT // Spent output
+ }
+
+ [Table("MerkleNodes")]
+ public class CMerkleNode
+ {
+ #region IMerkleNode
+ /// <summary>
+ /// Node identifier
+ /// </summary>
+ [PrimaryKey, AutoIncrement]
+ public long nMerkleNodeID { get; set; }
+
+ /// <summary>
+ /// Reference to parent block database item.
+ /// </summary>
+ [ForeignKey(typeof(CBlockStoreItem), Name = "ItemId")]
+ public long nParentBlockID { get; set; }
+
+ /// <summary>
+ /// Transaction type flag
+ /// </summary>
+ [Column("TransactionFlags")]
+ public TxFlags TransactionFlags { get; set; }
+
+ /// <summary>
+ /// Transaction hash
+ /// </summary>
+ [Column("TransactionHash")]
+ public byte[] TransactionHash { get; set; }
+
+ /// <summary>
+ /// Transaction offset from the beginning of block header, encoded in VarInt format.
+ /// </summary>
+ [Column("TxOffset")]
+ public byte[] TxOffset { get; set; }
+
+ /// <summary>
+ /// Transaction size, encoded in VarInt format.
+ /// </summary>
+ [Column("TxSize")]
+ public byte[] TxSize { get; set; }
+ #endregion
+
+ /// <summary>
+ /// Read transaction from file.
+ /// </summary>
+ /// <param name="reader">Stream with read access.</param>
+ /// <param name="tx">CTransaction reference.</param>
+ /// <returns>Result</returns>
+ public bool ReadFromFile(ref Stream reader, long nBlockPos, out CTransaction tx)
+ {
+ var buffer = new byte[CTransaction.nMaxTxSize];
+
+ tx = null;
+
+ try
+ {
+ reader.Seek(nBlockPos + nTxOffset, SeekOrigin.Begin); // Seek to transaction offset
+
+ if (nTxSize != reader.Read(buffer, 0, nTxSize))
+ {
+ return false;
+ }
+
+ tx = new CTransaction(buffer);
+
+ return true;
+ }
+ catch (IOException)
+ {
+ // I/O error
+ return false;
+ }
+ catch (TransactionConstructorException)
+ {
+ // Constructor error
+ return false;
+ }
+ }
+
+ /// <summary>
+ /// Transaction offset accessor
+ /// </summary>
+ [Ignore]
+ public long nTxOffset
+ {
+ get { return (long)VarInt.DecodeVarInt(TxOffset); }
+ private set { TxOffset = VarInt.EncodeVarInt(value); }
+ }
+
+ /// <summary>
+ /// Transaction size accessor
+ /// </summary>
+ [Ignore]
+ public int nTxSize
+ {
+ get { return (int)VarInt.DecodeVarInt(TxSize); }
+ private set { TxSize = VarInt.EncodeVarInt(value); }
+ }
+
+ public CMerkleNode(CTransaction tx)
+ {
+ nTxOffset = -1;
+ nParentBlockID = -1;
+
+ nTxSize = tx.Size;
+ TransactionHash = tx.Hash;
+
+ if (tx.IsCoinBase)
+ {
+ TransactionFlags |= TxFlags.TX_COINBASE;
+ }
+ else if (tx.IsCoinStake)
+ {
+ TransactionFlags |= TxFlags.TX_COINSTAKE;
+ }
+ else
+ {
+ TransactionFlags |= TxFlags.TX_USER;
+ }
+ }
+
+ public CMerkleNode(long nBlockId, long nOffset, CTransaction tx)
+ {
+ nParentBlockID = nBlockId;
+
+ nTxOffset = nOffset;
+ nTxSize = tx.Size;
+ TransactionHash = tx.Hash;
+
+ if (tx.IsCoinBase)
+ {
+ TransactionFlags |= TxFlags.TX_COINBASE;
+ }
+ else if (tx.IsCoinStake)
+ {
+ TransactionFlags |= TxFlags.TX_COINSTAKE;
+ }
+ else
+ {
+ TransactionFlags |= TxFlags.TX_USER;
+ }
+ }
+
+ }
+
+ [Table("Outputs")]
+ public class TxOutItem
+ {
+ /// <summary>
+ /// Reference to transaction item.
+ /// </summary>
+ [ForeignKey(typeof(CMerkleNode), Name = "nMerkleNodeID")]
+ public long nMerkleNodeID { get; set; }
+
+ /// <summary>
+ /// Output flags
+ /// </summary>
+ public OutputFlags outputFlags { get; set; }
+
+ /// <summary>
+ /// Output number in VarInt format.
+ /// </summary>
+ public byte[] OutputNumber { get; set; }
+
+ /// <summary>
+ /// Output value in VarInt format.
+ /// </summary>
+ public byte[] OutputValue { get; set; }
+
+ /// <summary>
+ /// Second half of script which contains spending instructions.
+ /// </summary>
+ public byte[] scriptPubKey { get; set; }
+
+ /// <summary>
+ /// Getter for output number.
+ /// </summary>
+ [Ignore]
+ public uint nOut
+ {
+ get { return (uint)VarInt.DecodeVarInt(OutputNumber); }
+ set { OutputNumber = VarInt.EncodeVarInt(value); }
+ }
+
+ /// <summary>
+ /// Getter for output value.
+ /// </summary>
+ [Ignore]
+ public ulong nValue
+ {
+ get { return VarInt.DecodeVarInt(OutputValue); }
+ set { OutputValue = VarInt.EncodeVarInt(value); }
+ }
+
+ /// <summary>
+ /// Getter ans setter for IsSpent flag.
+ /// </summary>
+ [Ignore]
+ public bool IsSpent
+ {
+ get { return (outputFlags & OutputFlags.SPENT) != 0; }
+ set { outputFlags |= value ? OutputFlags.SPENT : OutputFlags.AVAILABLE; }
+ }
+ }
+
+
+ /// <summary>
+ /// TxOut + transaction hash
+ /// </summary>
+ public class InputsJoin : TxOutItem
+ {
+ public byte[] TransactionHash { get; set; }
+ }
+
+
+
+}
<Compile Include="base_uint.cs" />
<Compile Include="BignumHelper.cs" />
<Compile Include="Checkpoints.cs" />
- <Compile Include="DatabaseInterfaces.cs" />
+ <Compile Include="DatabaseObjects.cs" />
<Compile Include="Entropy.cs" />
<Compile Include="InstructionQueue.cs" />
<Compile Include="CBlockStore.cs" />
CTxIn txin = tx.vin[0];
// Read block header
-
+
+ long nBlockPos = 0;
CBlock block = null;
- CTransaction txPrev = null;
- long nBlockPos = 0, nTxPos = 0;
-
- if (!CBlockStore.Instance.GetBlockByTransactionID(txin.prevout.hash, ref block, ref txPrev, ref nBlockPos, ref nTxPos))
+ if (!CBlockStore.Instance.GetBlockByTransactionID(txin.prevout.hash, ref block, ref nBlockPos))
{
return false; // unable to read block of previous transaction
}
+ long nTxPos = 0;
+ CTransaction txPrev = null;
+
+ // Iterate through vtx array
+ for (var i = 0; i < block.vtx.Length; i++)
+ {
+ if (block.vtx[i].Hash == txin.prevout.hash)
+ {
+ txPrev = block.vtx[i];
+ nTxPos = nBlockPos + block.GetTxOffset(i);
+
+ break;
+ }
+ }
+
+ if (txPrev == null)
+ {
+ return false; // No such transaction found in the block
+ }
+
if (!ScriptCode.VerifyScript(txin.scriptSig, txPrev.vout[txin.prevout.n].scriptPubKey, tx, 0, (int)scriptflag.SCRIPT_VERIFY_P2SH, 0))
{
return false; // vin[0] signature check failed
git://git.novaco.in / NovacoinLibrary.git / commitdiff