Novacoin/CTransaction.cs

   1 \feffusing System;
   2 using System.Text;
   3 using System.Collections.Generic;
   4
   5 namespace Novacoin
   6 {
   7         /// <summary>
   8         /// Represents the transaction. Any transaction must provide one input and one output at least.
   9         /// </summary>
  10         public class CTransaction
  11         {
  12                 /// <summary>
  13                 /// Version of transaction schema.
  14                 /// </summary>
  15                 public uint nVersion = 1;
  16
  17                 /// <summary>
  18                 /// Transaction timestamp.
  19                 /// </summary>
  20                 public uint nTime = 0;
  21
  22                 /// <summary>
  23                 /// Array of transaction inputs
  24                 /// </summary>
  25                 public CTxIn[] vin;
  26
  27                 /// <summary>
  28                 /// Array of transaction outputs
  29                 /// </summary>
  30                 public CTxOut[] vout;
  31
  32                 /// <summary>
  33                 /// Block height or timestamp when transaction is final
  34                 /// </summary>
  35                 public uint nLockTime = 0;
  36
  37         /// <summary>
  38         /// Initialize an empty instance
  39         /// </summary>
  40         public CTransaction()
  41         {
  42         }
  43
  44         /// <summary>
  45         /// Initialize new instance as a copy of another transaction
  46         /// </summary>
  47         /// <param name="tx">Transaction to copy from</param>
  48         public CTransaction(CTransaction tx)
  49         {
  50             nVersion = tx.nVersion;
  51             nTime = tx.nTime;
  52
  53             vin = new CTxIn[tx.vin.Length];
  54
  55             for (int i = 0; i < vin.Length; i++)
  56             {
  57                 vin[i] = new CTxIn(tx.vin[i]);
  58             }
  59
  60             vout = new CTxOut[tx.vout.Length];
  61
  62             for (int i = 0; i < vout.Length; i++)
  63             {
  64                 vout[i] = new CTxOut(tx.vout[i]);
  65             }
  66
  67             nLockTime = tx.nLockTime;
  68         }
  69
  70
  71         /// <summary>
  72         /// Parse byte sequence and initialize new instance of CTransaction
  73         /// </summary>
  74         /// <param name="txBytes"></param>
  75                 public CTransaction (IList<byte> txBytes)
  76                 {
  77             WrappedList<byte> wBytes = new WrappedList<byte>(txBytes);
  78
  79             nVersion = BitConverter.ToUInt32(wBytes.GetItems(4),0);
  80             nTime = BitConverter.ToUInt32(wBytes.GetItems(4),0);
  81
  82             int nInputs = (int)VarInt.ReadVarInt(ref wBytes);
  83             vin = new CTxIn[nInputs];
  84
  85             for (int nCurrentInput = 0; nCurrentInput < nInputs; nCurrentInput++)
  86             {
  87                 // Fill inputs array
  88                 vin[nCurrentInput] = new CTxIn();
  89
  90                 vin[nCurrentInput].txID = new Hash256(wBytes.GetItems(32));
  91                 vin[nCurrentInput].n = BitConverter.ToUInt32(wBytes.GetItems(4),0);
  92                 vin[nCurrentInput].scriptSig = wBytes.GetItems((int)VarInt.ReadVarInt(ref wBytes));
  93                 vin[nCurrentInput].nSequence = BitConverter.ToUInt32(wBytes.GetItems(4),0);
  94             }
  95
  96             int nOutputs = (int)VarInt.ReadVarInt(ref wBytes);
  97             vout = new CTxOut[nOutputs];
  98
  99             for (int nCurrentOutput = 0; nCurrentOutput < nOutputs; nCurrentOutput++)
 100             {
 101                 // Fill outputs array
 102                 vout[nCurrentOutput] = new CTxOut();
 103                 vout[nCurrentOutput].nValue = BitConverter.ToUInt64(wBytes.GetItems(8),0);
 104                 vout[nCurrentOutput].scriptPubKey = wBytes.GetItems((int)VarInt.ReadVarInt(ref wBytes));
 105             }
 106
 107             nLockTime = BitConverter.ToUInt32(wBytes.GetItems(4), 0);
 108                 }
 109
 110         /// <summary>
 111         /// Read transactions array which is encoded in the block body.
 112         /// </summary>
 113         /// <param name="wTxBytes">Bytes sequence</param>
 114         /// <returns>Transactions array</returns>
 115         public static CTransaction[] ReadTransactionsList(ref WrappedList<byte> wTxBytes)
 116         {
 117             CTransaction[] tx;
 118
 119             // Read amount of transactions
 120             int nTransactions = (int) VarInt.ReadVarInt(ref wTxBytes);
 121             tx = new CTransaction[nTransactions];
 122
 123             for (int nTx = 0; nTx < nTransactions; nTx++)
 124             {
 125                 // Fill the transactions array
 126                 tx[nTx] = new CTransaction();
 127
 128                 tx[nTx].nVersion = BitConverter.ToUInt32(wTxBytes.GetItems(4), 0);
 129                 tx[nTx].nTime = BitConverter.ToUInt32(wTxBytes.GetItems(4), 0);
 130
 131                 // Inputs array
 132                 tx[nTx].vin = CTxIn.ReadTxInList(ref wTxBytes);
 133
 134                 // outputs array
 135                 tx[nTx].vout = CTxOut.ReadTxOutList(ref wTxBytes);
 136
 137                 tx[nTx].nLockTime = BitConverter.ToUInt32(wTxBytes.GetItems(4), 0);
 138             }
 139
 140             return tx;
 141         }
 142
 143         public IList<byte> Bytes
 144         {
 145             get
 146             {
 147                 List<byte> resultBytes = new List<byte>();
 148
 149                 // Typical transaction example:
 150                 //
 151                 // 01000000 -- version
 152                 // 78b4c953 -- timestamp
 153                 // 06       -- amount of txins
 154                 // 340d96b77ec4ee9d42b31cadc2fab911e48d48c36274d516f226d5e85bbc512c -- txin hash
 155                 // 01000000 -- txin outnumber
 156                 // 6b       -- txin scriptSig length
 157                 // 483045022100c8df1fc17b6ea1355a39b92146ec67b3b53565e636e028010d3a8a87f6f805f202203888b9b74df03c3960773f2a81b2dfd1efb08bb036a8f3600bd24d5ed694cd5a0121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
 158                 // ffffffff -- txin nSequence
 159                 // 364c640420de8fa77313475970bf09ce4d0b1f8eabb8f1d6ea49d90c85b202ee -- txin hash
 160                 // 01000000 -- txin outnumber
 161                 // 6b       -- txin scriptSig length
 162                 // 483045022100b651bf3a6835d714d2c990c742136d769258d0170c9aac24803b986050a8655b0220623651077ff14b0a9d61e30e30f2c15352f70491096f0ec655ae1c79a44e53aa0121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
 163                 // ffffffff -- txin nSequence
 164                 // 7adbd5f2e521f567bfea2cb63e65d55e66c83563fe253464b75184a5e462043d -- txin hash
 165                 // 00000000 -- txin outnumber
 166                 // 6a       -- txin scriptSig length
 167                 // 4730440220183609f2b995993acc9df241aff722d48b9a731b0cd376212934565723ed81f00220737e7ce75ef39bdc061d0dcdba3ee24e43b899696a7c96803cee0a79e1f78ecb0121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
 168                 // ffffffff -- txin nSequence
 169                 // 999eb03e00a41c2f9fde8865a554ceebbc48d30f4c8ba22dd88da8c9b46fa920 -- txin hash
 170                 // 03000000 -- txin outnumber
 171                 // 6b       -- txin scriptSig length
 172                 // 483045022100ec1ab104ef086ba79b0f2611ebf1bfdd22a7a1020f6630fa1c6707546626e0db022056093d4048a999392185ccc735ef736a5497bd68f60b42e6c0c93ba770b54d010121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
 173                 // ffffffff -- txin nSequence
 174                 // c0543b86be257ddd85b014a76718a70fab9eaa3c477460e4ca187094d86f369c -- txin hash
 175                 // 05000000 -- txin outnumber
 176                 // 69       -- txin scriptSig length
 177                 // 463043021f24275c72f952043174daf01d7f713f878625f0522124a3cab48a0a2e12604202201b47742e6697b0ebdd1e4ba49c74baf142a0228ad0e0ee847488994c9dce78470121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
 178                 // ffffffff -- txin nSequence
 179                 // e1793d4519147782293dd1db6d90e461265d91db2cc6889c37209394d42ad10d -- txin hash
 180                 // 05000000 -- txin outnumber
 181                 // 6a       -- txin scriptSig length
 182                 // 473044022018a0c3d73b2765d75380614ab36ee8e3c937080894a19166128b1e3357b208fb0220233c9609985f535547381431526867ad0255ec4969afe5c360544992ed6b3ed60121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
 183                 // ffffffff -- txin nSequence
 184                 // 02 -- amount of txouts
 185                 // e542000000000000 -- txout value
 186                 // 19 -- scriptPubKey length
 187                 // 76a91457d84c814b14bd86bf32f106b733baa693db7dc788ac -- scriptPubKey
 188                 // 409c000000000000 -- txout value
 189                 // 19 -- scriptPubKey length
 190                 // 76a91408c8768d5d6bf7c1d9609da4e766c3f1752247b188ac -- scriptPubKey
 191                 // 00000000 -- lock time
 192
 193                 resultBytes.AddRange(BitConverter.GetBytes(nVersion));
 194                 resultBytes.AddRange(BitConverter.GetBytes(nTime));
 195                 resultBytes.AddRange(VarInt.EncodeVarInt(vin.LongLength));
 196
 197                 foreach (CTxIn input in vin)
 198                 {
 199                     resultBytes.AddRange(input.Bytes);
 200                 }
 201
 202                 resultBytes.AddRange(VarInt.EncodeVarInt(vout.LongLength));
 203
 204                 foreach (CTxOut output in vout)
 205                 {
 206                     resultBytes.AddRange(output.Bytes);
 207                 }
 208
 209                 resultBytes.AddRange(BitConverter.GetBytes(nLockTime));
 210
 211                 return resultBytes;
 212             }
 213         }
 214
 215         public override string ToString()
 216         {
 217             StringBuilder sb = new StringBuilder();
 218
 219             sb.AppendFormat("CTransaction(\n nVersion={0},\n nTime={1},\n", nVersion, nTime);
 220
 221             foreach (CTxIn txin in vin)
 222             {
 223                 sb.AppendFormat(" {0},\n", txin.ToString());
 224             }
 225
 226             foreach (CTxOut txout in vout)
 227             {
 228                 sb.AppendFormat(" {0},\n", txout.ToString());
 229             }
 230
 231             sb.AppendFormat("\nnLockTime={0}\n)", nLockTime);
 232
 233             return sb.ToString();
 234         }
 235         }
 236 }