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             // Initialize empty input and output arrays. Please note that such
  43             // configuration is not valid for real transaction, you have to supply
  44             // at least one input and one output.
  45             vin = new CTxIn[0];
  46             vout = new CTxOut[0];
  47         }
  48
  49         /// <summary>
  50         /// Initialize new instance as a copy of another transaction
  51         /// </summary>
  52         /// <param name="tx">Transaction to copy from</param>
  53         public CTransaction(CTransaction tx)
  54         {
  55             nVersion = tx.nVersion;
  56             nTime = tx.nTime;
  57
  58             vin = new CTxIn[tx.vin.Length];
  59
  60             for (int i = 0; i < vin.Length; i++)
  61             {
  62                 vin[i] = new CTxIn(tx.vin[i]);
  63             }
  64
  65             vout = new CTxOut[tx.vout.Length];
  66
  67             for (int i = 0; i < vout.Length; i++)
  68             {
  69                 vout[i] = new CTxOut(tx.vout[i]);
  70             }
  71
  72             nLockTime = tx.nLockTime;
  73         }
  74
  75
  76         /// <summary>
  77         /// Parse byte sequence and initialize new instance of CTransaction
  78         /// </summary>
  79         /// <param name="txBytes">Byte sequence</param>
  80                 public CTransaction (IList<byte> txBytes)
  81                 {
  82             WrappedList<byte> wBytes = new WrappedList<byte>(txBytes);
  83
  84             nVersion = BitConverter.ToUInt32(wBytes.GetItems(4),0);
  85             nTime = BitConverter.ToUInt32(wBytes.GetItems(4),0);
  86
  87             int nInputs = (int)VarInt.ReadVarInt(ref wBytes);
  88             vin = new CTxIn[nInputs];
  89
  90             for (int nCurrentInput = 0; nCurrentInput < nInputs; nCurrentInput++)
  91             {
  92                 // Fill inputs array
  93                 vin[nCurrentInput] = new CTxIn();
  94
  95                 vin[nCurrentInput].txID = new Hash256(wBytes.GetItems(32));
  96                 vin[nCurrentInput].n = BitConverter.ToUInt32(wBytes.GetItems(4), 0);
  97
  98                 int nScriptSigLen = (int)VarInt.ReadVarInt(ref wBytes);
  99                 vin[nCurrentInput].scriptSig = new CScript(wBytes.GetItems(nScriptSigLen));
 100                 vin[nCurrentInput].nSequence = BitConverter.ToUInt32(wBytes.GetItems(4), 0);
 101             }
 102
 103             int nOutputs = (int)VarInt.ReadVarInt(ref wBytes);
 104             vout = new CTxOut[nOutputs];
 105
 106             for (int nCurrentOutput = 0; nCurrentOutput < nOutputs; nCurrentOutput++)
 107             {
 108                 // Fill outputs array
 109                 vout[nCurrentOutput] = new CTxOut();
 110                 vout[nCurrentOutput].nValue = BitConverter.ToUInt64(wBytes.GetItems(8), 0);
 111
 112                 int nScriptPKLen = (int)VarInt.ReadVarInt(ref wBytes);
 113                 vout[nCurrentOutput].scriptPubKey = new CScript(wBytes.GetItems(nScriptPKLen));
 114             }
 115
 116             nLockTime = BitConverter.ToUInt32(wBytes.GetItems(4), 0);
 117                 }
 118
 119         /// <summary>
 120         /// Read transactions array which is encoded in the block body.
 121         /// </summary>
 122         /// <param name="wTxBytes">Bytes sequence</param>
 123         /// <returns>Transactions array</returns>
 124         public static CTransaction[] ReadTransactionsList(ref WrappedList<byte> wTxBytes)
 125         {
 126             CTransaction[] tx;
 127
 128             // Read amount of transactions
 129             int nTransactions = (int) VarInt.ReadVarInt(ref wTxBytes);
 130             tx = new CTransaction[nTransactions];
 131
 132             for (int nTx = 0; nTx < nTransactions; nTx++)
 133             {
 134                 // Fill the transactions array
 135                 tx[nTx] = new CTransaction();
 136
 137                 tx[nTx].nVersion = BitConverter.ToUInt32(wTxBytes.GetItems(4), 0);
 138                 tx[nTx].nTime = BitConverter.ToUInt32(wTxBytes.GetItems(4), 0);
 139
 140                 // Inputs array
 141                 tx[nTx].vin = CTxIn.ReadTxInList(ref wTxBytes);
 142
 143                 // outputs array
 144                 tx[nTx].vout = CTxOut.ReadTxOutList(ref wTxBytes);
 145
 146                 tx[nTx].nLockTime = BitConverter.ToUInt32(wTxBytes.GetItems(4), 0);
 147             }
 148
 149             return tx;
 150         }
 151
 152         public IList<byte> Bytes
 153         {
 154             get
 155             {
 156                 List<byte> resultBytes = new List<byte>();
 157
 158                 // Typical transaction example:
 159                 //
 160                 // 01000000 -- version
 161                 // 78b4c953 -- timestamp
 162                 // 06       -- amount of txins
 163                 // 340d96b77ec4ee9d42b31cadc2fab911e48d48c36274d516f226d5e85bbc512c -- txin hash
 164                 // 01000000 -- txin outnumber
 165                 // 6b       -- txin scriptSig length
 166                 // 483045022100c8df1fc17b6ea1355a39b92146ec67b3b53565e636e028010d3a8a87f6f805f202203888b9b74df03c3960773f2a81b2dfd1efb08bb036a8f3600bd24d5ed694cd5a0121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
 167                 // ffffffff -- txin nSequence
 168                 // 364c640420de8fa77313475970bf09ce4d0b1f8eabb8f1d6ea49d90c85b202ee -- txin hash
 169                 // 01000000 -- txin outnumber
 170                 // 6b       -- txin scriptSig length
 171                 // 483045022100b651bf3a6835d714d2c990c742136d769258d0170c9aac24803b986050a8655b0220623651077ff14b0a9d61e30e30f2c15352f70491096f0ec655ae1c79a44e53aa0121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
 172                 // ffffffff -- txin nSequence
 173                 // 7adbd5f2e521f567bfea2cb63e65d55e66c83563fe253464b75184a5e462043d -- txin hash
 174                 // 00000000 -- txin outnumber
 175                 // 6a       -- txin scriptSig length
 176                 // 4730440220183609f2b995993acc9df241aff722d48b9a731b0cd376212934565723ed81f00220737e7ce75ef39bdc061d0dcdba3ee24e43b899696a7c96803cee0a79e1f78ecb0121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
 177                 // ffffffff -- txin nSequence
 178                 // 999eb03e00a41c2f9fde8865a554ceebbc48d30f4c8ba22dd88da8c9b46fa920 -- txin hash
 179                 // 03000000 -- txin outnumber
 180                 // 6b       -- txin scriptSig length
 181                 // 483045022100ec1ab104ef086ba79b0f2611ebf1bfdd22a7a1020f6630fa1c6707546626e0db022056093d4048a999392185ccc735ef736a5497bd68f60b42e6c0c93ba770b54d010121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
 182                 // ffffffff -- txin nSequence
 183                 // c0543b86be257ddd85b014a76718a70fab9eaa3c477460e4ca187094d86f369c -- txin hash
 184                 // 05000000 -- txin outnumber
 185                 // 69       -- txin scriptSig length
 186                 // 463043021f24275c72f952043174daf01d7f713f878625f0522124a3cab48a0a2e12604202201b47742e6697b0ebdd1e4ba49c74baf142a0228ad0e0ee847488994c9dce78470121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
 187                 // ffffffff -- txin nSequence
 188                 // e1793d4519147782293dd1db6d90e461265d91db2cc6889c37209394d42ad10d -- txin hash
 189                 // 05000000 -- txin outnumber
 190                 // 6a       -- txin scriptSig length
 191                 // 473044022018a0c3d73b2765d75380614ab36ee8e3c937080894a19166128b1e3357b208fb0220233c9609985f535547381431526867ad0255ec4969afe5c360544992ed6b3ed60121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
 192                 // ffffffff -- txin nSequence
 193                 // 02 -- amount of txouts
 194                 // e542000000000000 -- txout value
 195                 // 19 -- scriptPubKey length
 196                 // 76a91457d84c814b14bd86bf32f106b733baa693db7dc788ac -- scriptPubKey
 197                 // 409c000000000000 -- txout value
 198                 // 19 -- scriptPubKey length
 199                 // 76a91408c8768d5d6bf7c1d9609da4e766c3f1752247b188ac -- scriptPubKey
 200                 // 00000000 -- lock time
 201
 202                 resultBytes.AddRange(BitConverter.GetBytes(nVersion));
 203                 resultBytes.AddRange(BitConverter.GetBytes(nTime));
 204                 resultBytes.AddRange(VarInt.EncodeVarInt(vin.LongLength));
 205
 206                 foreach (CTxIn input in vin)
 207                 {
 208                     resultBytes.AddRange(input.Bytes);
 209                 }
 210
 211                 resultBytes.AddRange(VarInt.EncodeVarInt(vout.LongLength));
 212
 213                 foreach (CTxOut output in vout)
 214                 {
 215                     resultBytes.AddRange(output.Bytes);
 216                 }
 217
 218                 resultBytes.AddRange(BitConverter.GetBytes(nLockTime));
 219
 220                 return resultBytes;
 221             }
 222         }
 223
 224         public override string ToString()
 225         {
 226             StringBuilder sb = new StringBuilder();
 227
 228             sb.AppendFormat("CTransaction(\n nVersion={0},\n nTime={1},\n", nVersion, nTime);
 229
 230             foreach (CTxIn txin in vin)
 231             {
 232                 sb.AppendFormat(" {0},\n", txin.ToString());
 233             }
 234
 235             foreach (CTxOut txout in vout)
 236             {
 237                 sb.AppendFormat(" {0},\n", txout.ToString());
 238             }
 239
 240             sb.AppendFormat("\nnLockTime={0}\n)", nLockTime);
 241
 242             return sb.ToString();
 243         }
 244         }
 245 }