using System;
using System.Text;
using System.Collections.Generic;
namespace Novacoin
{
///
/// Represents the transaction. Any transaction must provide one input and one output at least.
///
public class CTransaction
{
///
/// Version of transaction schema.
///
public uint nVersion = 1;
///
/// Transaction timestamp.
///
public uint nTime = 0;
///
/// 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 = 0;
///
/// 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.
vin = new CTxIn[0];
vout = new CTxOut[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(IList txBytes)
{
WrappedList wBytes = new WrappedList(txBytes);
nVersion = BitConverter.ToUInt32(wBytes.GetItems(4), 0);
nTime = BitConverter.ToUInt32(wBytes.GetItems(4), 0);
int nInputs = (int)VarInt.ReadVarInt(ref wBytes);
vin = new CTxIn[nInputs];
for (int nCurrentInput = 0; nCurrentInput < nInputs; nCurrentInput++)
{
// Fill inputs array
vin[nCurrentInput] = new CTxIn();
vin[nCurrentInput].prevout = new COutPoint(wBytes.GetItems(36));
int nScriptSigLen = (int)VarInt.ReadVarInt(ref wBytes);
vin[nCurrentInput].scriptSig = new CScript(wBytes.GetItems(nScriptSigLen));
vin[nCurrentInput].nSequence = BitConverter.ToUInt32(wBytes.GetItems(4), 0);
}
int nOutputs = (int)VarInt.ReadVarInt(ref wBytes);
vout = new CTxOut[nOutputs];
for (int nCurrentOutput = 0; nCurrentOutput < nOutputs; nCurrentOutput++)
{
// Fill outputs array
vout[nCurrentOutput] = new CTxOut();
vout[nCurrentOutput].nValue = BitConverter.ToInt64(wBytes.GetItems(8), 0);
int nScriptPKLen = (int)VarInt.ReadVarInt(ref wBytes);
vout[nCurrentOutput].scriptPubKey = new CScript(wBytes.GetItems(nScriptPKLen));
}
nLockTime = BitConverter.ToUInt32(wBytes.GetItems(4), 0);
}
///
/// Read transactions array which is encoded in the block body.
///
/// Bytes sequence
/// Transactions array
public static CTransaction[] ReadTransactionsList(ref WrappedList wTxBytes)
{
CTransaction[] tx;
// Read amount of transactions
int nTransactions = (int)VarInt.ReadVarInt(ref wTxBytes);
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.GetItems(4), 0);
tx[nTx].nTime = BitConverter.ToUInt32(wTxBytes.GetItems(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.GetItems(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);
}
}
public IList Bytes
{
get
{
List resultBytes = new List();
// Typical transaction example:
//
// 01000000 -- version
// 78b4c953 -- timestamp
// 06 -- amount of txins
// 340d96b77ec4ee9d42b31cadc2fab911e48d48c36274d516f226d5e85bbc512c -- txin hash
// 01000000 -- txin outnumber
// 6b -- txin scriptSig length
// 483045022100c8df1fc17b6ea1355a39b92146ec67b3b53565e636e028010d3a8a87f6f805f202203888b9b74df03c3960773f2a81b2dfd1efb08bb036a8f3600bd24d5ed694cd5a0121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
// ffffffff -- txin nSequence
// 364c640420de8fa77313475970bf09ce4d0b1f8eabb8f1d6ea49d90c85b202ee -- txin hash
// 01000000 -- txin outnumber
// 6b -- txin scriptSig length
// 483045022100b651bf3a6835d714d2c990c742136d769258d0170c9aac24803b986050a8655b0220623651077ff14b0a9d61e30e30f2c15352f70491096f0ec655ae1c79a44e53aa0121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
// ffffffff -- txin nSequence
// 7adbd5f2e521f567bfea2cb63e65d55e66c83563fe253464b75184a5e462043d -- txin hash
// 00000000 -- txin outnumber
// 6a -- txin scriptSig length
// 4730440220183609f2b995993acc9df241aff722d48b9a731b0cd376212934565723ed81f00220737e7ce75ef39bdc061d0dcdba3ee24e43b899696a7c96803cee0a79e1f78ecb0121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
// ffffffff -- txin nSequence
// 999eb03e00a41c2f9fde8865a554ceebbc48d30f4c8ba22dd88da8c9b46fa920 -- txin hash
// 03000000 -- txin outnumber
// 6b -- txin scriptSig length
// 483045022100ec1ab104ef086ba79b0f2611ebf1bfdd22a7a1020f6630fa1c6707546626e0db022056093d4048a999392185ccc735ef736a5497bd68f60b42e6c0c93ba770b54d010121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
// ffffffff -- txin nSequence
// c0543b86be257ddd85b014a76718a70fab9eaa3c477460e4ca187094d86f369c -- txin hash
// 05000000 -- txin outnumber
// 69 -- txin scriptSig length
// 463043021f24275c72f952043174daf01d7f713f878625f0522124a3cab48a0a2e12604202201b47742e6697b0ebdd1e4ba49c74baf142a0228ad0e0ee847488994c9dce78470121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
// ffffffff -- txin nSequence
// e1793d4519147782293dd1db6d90e461265d91db2cc6889c37209394d42ad10d -- txin hash
// 05000000 -- txin outnumber
// 6a -- txin scriptSig length
// 473044022018a0c3d73b2765d75380614ab36ee8e3c937080894a19166128b1e3357b208fb0220233c9609985f535547381431526867ad0255ec4969afe5c360544992ed6b3ed60121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
// ffffffff -- txin nSequence
// 02 -- amount of txouts
// e542000000000000 -- txout value
// 19 -- scriptPubKey length
// 76a91457d84c814b14bd86bf32f106b733baa693db7dc788ac -- scriptPubKey
// 409c000000000000 -- txout value
// 19 -- scriptPubKey length
// 76a91408c8768d5d6bf7c1d9609da4e766c3f1752247b188ac -- scriptPubKey
// 00000000 -- lock time
resultBytes.AddRange(BitConverter.GetBytes(nVersion));
resultBytes.AddRange(BitConverter.GetBytes(nTime));
resultBytes.AddRange(VarInt.EncodeVarInt(vin.LongLength));
foreach (CTxIn input in vin)
{
resultBytes.AddRange(input.Bytes);
}
resultBytes.AddRange(VarInt.EncodeVarInt(vout.LongLength));
foreach (CTxOut output in vout)
{
resultBytes.AddRange(output.Bytes);
}
resultBytes.AddRange(BitConverter.GetBytes(nLockTime));
return resultBytes;
}
}
public override string ToString()
{
StringBuilder sb = new StringBuilder();
sb.AppendFormat("CTransaction(\n nVersion={0},\n nTime={1},\n", nVersion, nTime);
foreach (CTxIn txin in vin)
{
sb.AppendFormat(" {0},\n", txin.ToString());
}
foreach (CTxOut txout in vout)
{
sb.AppendFormat(" {0},\n", txout.ToString());
}
sb.AppendFormat("\nnLockTime={0}\n)", nLockTime);
return sb.ToString();
}
}
}