X-Git-Url: https://git.novaco.in/?a=blobdiff_plain;f=Novacoin%2FCTransaction.cs;h=343968a1c674d9feab3a860f7b1a9a3b2dd02ab0;hb=e817cfa60d6a7d7d724e6cd3ec3a04239aae1ac2;hp=e068a0db79903ec9c87879887c70c6d35960ef77;hpb=b5794452d82d72e14ecfa8fa236654201d271aaa;p=NovacoinLibrary.git
diff --git a/Novacoin/CTransaction.cs b/Novacoin/CTransaction.cs
index e068a0d..343968a 100644
--- a/Novacoin/CTransaction.cs
+++ b/Novacoin/CTransaction.cs
@@ -1,38 +1,267 @@
-using System;
+/**
+ * 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 .
+ */
+
+using System;
+using System.Text;
+using System.Collections.Generic;
namespace Novacoin
{
- public class CTransaction
- {
- ///
- /// Version of transaction schema.
- ///
- public uint nVersion;
-
- ///
- /// Transaction timestamp.
- ///
- public uint nTime;
-
- ///
- /// Array of transaction inputs
- ///
- public CTxIn[] inputs;
-
- ///
- /// Array of transaction outputs
- ///
- public CTxOut[] outputs;
-
- ///
- /// Block height or timestamp when transaction is final
- ///
- public uint nLockTime;
-
- public CTransaction ()
- {
-
- }
+ ///
+ /// Represents the transaction. Any transaction must provide one input and one output at least.
+ ///
+ public class CTransaction
+ {
+ ///
+ /// Version of transaction schema.
+ ///
+ public uint nVersion;
+
+ ///
+ /// Transaction timestamp.
+ ///
+ public uint nTime;
+
+ ///
+ /// Array of transaction inputs
+ ///
+ public CTxIn[] vin;
+
+ ///
+ /// Array of transaction outputs
+ ///
+ public CTxOut[] vout;
+
+ ///
+ /// Block height or timestamp when transaction is final
+ ///
+ public uint nLockTime;
+
+ ///
+ /// Initialize an empty instance
+ ///
+ public CTransaction()
+ {
+ // Initialize empty input and output arrays. Please note that such
+ // configuration is not valid for real transaction, you have to supply
+ // at least one input and one output.
+ nVersion = 1;
+ nTime = 0;
+ vin = new CTxIn[0];
+ vout = new CTxOut[0];
+ nLockTime = 0;
+ }
+
+ ///
+ /// Initialize new instance as a copy of another transaction
+ ///
+ /// Transaction to copy from
+ public CTransaction(CTransaction tx)
+ {
+ nVersion = tx.nVersion;
+ nTime = tx.nTime;
+
+ vin = new CTxIn[tx.vin.Length];
+
+ for (int i = 0; i < vin.Length; i++)
+ {
+ vin[i] = new CTxIn(tx.vin[i]);
+ }
+
+ vout = new CTxOut[tx.vout.Length];
+
+ for (int i = 0; i < vout.Length; i++)
+ {
+ vout[i] = new CTxOut(tx.vout[i]);
+ }
+
+ nLockTime = tx.nLockTime;
+ }
+
+
+ ///
+ /// Parse byte sequence and initialize new instance of CTransaction
+ ///
+ /// Byte sequence
+ public CTransaction(byte[] txBytes)
+ {
+ var wBytes = new ByteQueue(txBytes);
+
+ nVersion = BitConverter.ToUInt32(wBytes.Get(4), 0);
+ nTime = BitConverter.ToUInt32(wBytes.Get(4), 0);
+
+ int nInputs = (int)wBytes.GetVarInt();
+ vin = new CTxIn[nInputs];
+
+ for (int nCurrentInput = 0; nCurrentInput < nInputs; nCurrentInput++)
+ {
+ // Fill inputs array
+ vin[nCurrentInput] = new CTxIn();
+
+ vin[nCurrentInput].prevout = new COutPoint(wBytes.Get(36));
+
+ int nScriptSigLen = (int)wBytes.GetVarInt();
+ vin[nCurrentInput].scriptSig = new CScript(wBytes.Get(nScriptSigLen));
+
+ vin[nCurrentInput].nSequence = BitConverter.ToUInt32(wBytes.Get(4), 0);
+ }
+
+ int nOutputs = (int)wBytes.GetVarInt();
+ vout = new CTxOut[nOutputs];
+
+ for (int nCurrentOutput = 0; nCurrentOutput < nOutputs; nCurrentOutput++)
+ {
+ // Fill outputs array
+ vout[nCurrentOutput] = new CTxOut();
+ vout[nCurrentOutput].nValue = BitConverter.ToUInt64(wBytes.Get(8), 0);
+
+ int nScriptPKLen = (int)wBytes.GetVarInt();
+ vout[nCurrentOutput].scriptPubKey = new CScript(wBytes.Get(nScriptPKLen));
+ }
+
+ nLockTime = BitConverter.ToUInt32(wBytes.Get(4), 0);
+ }
+
+ ///
+ /// Serialized size
+ ///
+ public int Size
+ {
+ get
+ {
+ int nSize = 12; // nVersion, nTime, nLockLime
+
+ nSize += VarInt.GetEncodedSize(vin.Length);
+ nSize += VarInt.GetEncodedSize(vout.Length);
+
+ foreach (var input in vin)
+ {
+ nSize += input.Size;
+ }
+
+ foreach (var output in vout)
+ {
+ nSize += output.Size;
+ }
+
+ return nSize;
+ }
+ }
+
+ ///
+ /// Read transactions array which is encoded in the block body.
+ ///
+ /// Bytes sequence
+ /// Transactions array
+ public static CTransaction[] ReadTransactionsList(ref ByteQueue wTxBytes)
+ {
+ // Read amount of transactions
+ int nTransactions = (int)wTxBytes.GetVarInt();
+ var tx = new CTransaction[nTransactions];
+
+ for (int nTx = 0; nTx < nTransactions; nTx++)
+ {
+ // Fill the transactions array
+ tx[nTx] = new CTransaction();
+
+ tx[nTx].nVersion = BitConverter.ToUInt32(wTxBytes.Get(4), 0);
+ tx[nTx].nTime = BitConverter.ToUInt32(wTxBytes.Get(4), 0);
+
+ // Inputs array
+ tx[nTx].vin = CTxIn.ReadTxInList(ref wTxBytes);
+
+ // outputs array
+ tx[nTx].vout = CTxOut.ReadTxOutList(ref wTxBytes);
+
+ tx[nTx].nLockTime = BitConverter.ToUInt32(wTxBytes.Get(4), 0);
+ }
+
+ return tx;
+ }
+
+ public bool IsCoinBase
+ {
+ get { return (vin.Length == 1 && vin[0].prevout.IsNull && vout.Length >= 1); }
+ }
+
+ public bool IsCoinStake
+ {
+ get
+ {
+ return (vin.Length > 0 && (!vin[0].prevout.IsNull) && vout.Length >= 2 && vout[0].IsEmpty);
+ }
+ }
+
+ ///
+ /// Transaction hash
+ ///
+ public Hash256 Hash
+ {
+ get { return Hash256.Compute256(this); }
+ }
+
+ ///
+ /// A sequence of bytes, which corresponds to the current state of CTransaction.
+ ///
+ public static implicit operator byte[] (CTransaction tx)
+ {
+ var resultBytes = new List();
+
+ resultBytes.AddRange(BitConverter.GetBytes(tx.nVersion));
+ resultBytes.AddRange(BitConverter.GetBytes(tx.nTime));
+ resultBytes.AddRange(VarInt.EncodeVarInt(tx.vin.LongLength));
+
+ foreach (var input in tx.vin)
+ {
+ resultBytes.AddRange((byte[])input);
+ }
+
+ resultBytes.AddRange(VarInt.EncodeVarInt(tx.vout.LongLength));
+
+ foreach (var output in tx.vout)
+ {
+ resultBytes.AddRange((byte[])output);
+ }
+
+ resultBytes.AddRange(BitConverter.GetBytes(tx.nLockTime));
+
+ return resultBytes.ToArray();
+ }
+
+ public override string ToString()
+ {
+ var sb = new StringBuilder();
+
+ sb.AppendFormat("CTransaction(\n nVersion={0},\n nTime={1},\n", nVersion, nTime);
+
+ foreach (var txin in vin)
+ {
+ sb.AppendFormat(" {0},\n", txin.ToString());
+ }
+
+ foreach (var txout in vout)
+ {
+ sb.AppendFormat(" {0},\n", txout.ToString());
+ }
+
+ sb.AppendFormat("\nnLockTime={0}\n)", nLockTime);
+
+ return sb.ToString();
+ }
}
}
-