-\feffusing System;
+\feff/**
+ * Novacoin classes library
+ * Copyright (C) 2015 Alex D. (balthazar.ad@gmail.com)
+
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+ using System;
using System.Text;
using System.Collections.Generic;
/// </summary>
public CTransaction[] vtx;
- /// <summary>
- /// Block header signature.
- /// </summary>
- public byte[] signature;
+ /// <summary>
+ /// Block header signature.
+ /// </summary>
+ public byte[] signature = new byte[0];
+
+ public CBlock(CBlock b)
+ {
+ header = new CBlockHeader(b.header);
+
+ for (int i = 0; i < b.vtx.Length; i++)
+ {
+ vtx[i] = new CTransaction(b.vtx[i]);
+ }
+
+ b.signature.CopyTo(signature, 0);
+ }
/// <summary>
/// Parse byte sequence and initialize new block instance
/// </summary>
/// <param name="blockBytes"></param>
- public CBlock (List<byte> blockBytes)
+ public CBlock (IList<byte> blockBytes)
{
- header = new CBlockHeader();
-
- WrappedList<byte> wBytes = new WrappedList<byte>(blockBytes);
+ ByteQueue wBytes = new ByteQueue(blockBytes);
// Fill the block header fields
- header.nVersion = Interop.LEBytesToUInt32(wBytes.GetItems(4));
- header.prevHash = new Hash256(wBytes.GetItems(32));
- header.merkleRoot = new Hash256(wBytes.GetItems(32));
- header.nTime = Interop.LEBytesToUInt32(wBytes.GetItems(4));
- header.nBits = Interop.LEBytesToUInt32(wBytes.GetItems(4));
- header.nNonce = Interop.LEBytesToUInt32(wBytes.GetItems(4));
+ header = new CBlockHeader(wBytes.Get(80));
// Parse transactions list
vtx = CTransaction.ReadTransactionsList(ref wBytes);
// Read block signature
- signature = wBytes.GetItems((int)VarInt.ReadVarInt(ref wBytes));
+ signature = wBytes.Get((int)wBytes.GetVarInt());
}
+ public CBlock()
+ {
+ // Initialize empty array of transactions. Please note that such
+ // configuration is not valid real block since it has to provide
+ // at least one transaction.
+ vtx = new CTransaction[0];
+ }
+
/// <summary>
- /// Convert current instance into sequence of bytes
+ /// Is this a Proof-of-Stake block?
/// </summary>
- /// <returns>Byte sequence</returns>
- public IList<byte> ToBytes()
+ public bool IsProofOfStake
{
- List<byte> r = new List<byte>();
-
- r.AddRange(header.ToBytes());
- r.AddRange(VarInt.EncodeVarInt(vtx.LongLength)); // transactions count
+ get
+ {
+ return (vtx.Length > 1 && vtx[1].IsCoinStake);
+ }
+ }
- foreach (CTransaction tx in vtx)
+ /// <summary>
+ /// Was this signed correctly?
+ /// </summary>
+ public bool SignatureOK
+ {
+ get
{
- r.AddRange(tx.ToBytes());
+ if (IsProofOfStake)
+ {
+ if (signature.Length == 0)
+ {
+ return false; // No signature
+ }
+
+ txnouttype whichType;
+ IList<byte[]> solutions;
+
+ if (!ScriptCode.Solver(vtx[1].vout[1].scriptPubKey, out whichType, out solutions))
+ {
+ return false; // No solutions found
+ }
+
+ if (whichType == txnouttype.TX_PUBKEY)
+ {
+ CPubKey pubkey;
+
+ try
+ {
+ pubkey = new CPubKey(solutions[0]);
+ }
+ catch (Exception)
+ {
+ return false; // Error while loading public key
+ }
+
+ return pubkey.VerifySignature(header.Hash, signature);
+ }
+ }
+ else
+ {
+ // Proof-of-Work blocks have no signature
+
+ return true;
+ }
+
+ return false;
}
+ }
+
+ /// <summary>
+ /// Get current instance as sequence of bytes
+ /// </summary>
+ /// <returns>Byte sequence</returns>
+ public IList<byte> Bytes
+ {
+ get
+ {
+ var r = new List<byte>();
+
+ r.AddRange(header.Bytes);
+ r.AddRange(VarInt.EncodeVarInt(vtx.LongLength)); // transactions count
- r.AddRange(VarInt.EncodeVarInt(signature.LongLength));
- r.AddRange(signature);
+ foreach (var tx in vtx)
+ {
+ r.AddRange(tx.Bytes);
+ }
- return r;
+ r.AddRange(VarInt.EncodeVarInt(signature.LongLength));
+ r.AddRange(signature);
+
+ return r;
+ }
}
public override string ToString()
{
- StringBuilder sb = new StringBuilder();
+ var sb = new StringBuilder();
sb.AppendFormat("CBlock(\n header={0},\n", header.ToString());
- foreach(CTransaction tx in vtx)
+ foreach(var tx in vtx)
+ {
+ sb.AppendFormat("{0}", tx.ToString());
+ }
+
+ if (IsProofOfStake)
{
- sb.AppendFormat("{0},\n", tx.ToString());
+ sb.AppendFormat(", signature={0}, signatureOK={1}\n", Interop.ToHex(signature), SignatureOK);
}
- sb.AppendFormat("signature={0})\n", Interop.ToHex(signature));
+ sb.Append(")");
- // TODO
return sb.ToString();
}
}
git://git.novaco.in / NovacoinLibrary.git / blobdiff