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[] inputs;
  26
  27                 /// <summary>
  28                 /// Array of transaction outputs
  29                 /// </summary>
  30                 public CTxOut[] outputs;
  31
  32                 /// <summary>
  33                 /// Block height or timestamp when transaction is final
  34                 /// </summary>
  35                 public uint nLockTime = 0;
  36
  37         /// <summary>
  38         /// Parse byte sequence and initialize new instance of CTransaction
  39         /// </summary>
  40         /// <param name="txBytes"></param>
  41                 public CTransaction (IList<byte> txBytes)
  42                 {
  43             WrappedList<byte> wBytes = new WrappedList<byte>(txBytes);
  44
  45             nVersion = Interop.LEBytesToUInt32(wBytes.GetItems(4));
  46             nTime = Interop.LEBytesToUInt32(wBytes.GetItems(4));
  47
  48             int nInputs = (int)VarInt.ReadVarInt(wBytes);
  49             inputs = new CTxIn[nInputs];
  50
  51             for (int nCurrentInput = 0; nCurrentInput < nInputs; nCurrentInput++)
  52             {
  53                 // Fill inputs array
  54                 inputs[nCurrentInput] = new CTxIn();
  55
  56                 inputs[nCurrentInput].txID = new Hash256(wBytes.GetItems(32));
  57                 inputs[nCurrentInput].n = Interop.LEBytesToUInt32(wBytes.GetItems(4));
  58                 inputs[nCurrentInput].scriptSig = wBytes.GetItems((int)VarInt.ReadVarInt(wBytes));
  59                 inputs[nCurrentInput].nSequence = Interop.LEBytesToUInt32(wBytes.GetItems(4));
  60             }
  61
  62             int nOutputs = (int)VarInt.ReadVarInt(wBytes);
  63             outputs = new CTxOut[nOutputs];
  64
  65             for (int nCurrentOutput = 0; nCurrentOutput < nOutputs; nCurrentOutput++)
  66             {
  67                 // Fill outputs array
  68                 outputs[nCurrentOutput] = new CTxOut();
  69                 outputs[nCurrentOutput].nValue = Interop.LEBytesToUInt64(wBytes.GetItems(8));
  70                 outputs[nCurrentOutput].scriptPubKey = wBytes.GetItems((int)VarInt.ReadVarInt(wBytes));
  71             }
  72
  73             nLockTime = Interop.LEBytesToUInt32(wBytes.GetItems(4));
  74                 }
  75
  76         IList<byte> ToBytes()
  77         {
  78             List<byte> resultBytes = new List<byte>();
  79
  80             // Typical transaction example:
  81             //
  82             // 01000000 -- version
  83             // 78b4c953 -- timestamp
  84             // 06       -- amount of txins
  85             // 340d96b77ec4ee9d42b31cadc2fab911e48d48c36274d516f226d5e85bbc512c -- txin hash
  86             // 01000000 -- txin outnumber
  87             // 6b       -- txin scriptSig length
  88             // 483045022100c8df1fc17b6ea1355a39b92146ec67b3b53565e636e028010d3a8a87f6f805f202203888b9b74df03c3960773f2a81b2dfd1efb08bb036a8f3600bd24d5ed694cd5a0121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
  89             // ffffffff -- txin nSequence
  90             // 364c640420de8fa77313475970bf09ce4d0b1f8eabb8f1d6ea49d90c85b202ee -- txin hash
  91             // 01000000 -- txin outnumber
  92             // 6b       -- txin scriptSig length
  93             // 483045022100b651bf3a6835d714d2c990c742136d769258d0170c9aac24803b986050a8655b0220623651077ff14b0a9d61e30e30f2c15352f70491096f0ec655ae1c79a44e53aa0121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
  94             // ffffffff -- txin nSequence
  95             // 7adbd5f2e521f567bfea2cb63e65d55e66c83563fe253464b75184a5e462043d -- txin hash
  96             // 00000000 -- txin outnumber
  97             // 6a       -- txin scriptSig length
  98             // 4730440220183609f2b995993acc9df241aff722d48b9a731b0cd376212934565723ed81f00220737e7ce75ef39bdc061d0dcdba3ee24e43b899696a7c96803cee0a79e1f78ecb0121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
  99             // ffffffff -- txin nSequence
 100             // 999eb03e00a41c2f9fde8865a554ceebbc48d30f4c8ba22dd88da8c9b46fa920 -- txin hash
 101             // 03000000 -- txin outnumber
 102             // 6b       -- txin scriptSig length
 103             // 483045022100ec1ab104ef086ba79b0f2611ebf1bfdd22a7a1020f6630fa1c6707546626e0db022056093d4048a999392185ccc735ef736a5497bd68f60b42e6c0c93ba770b54d010121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
 104             // ffffffff -- txin nSequence
 105             // c0543b86be257ddd85b014a76718a70fab9eaa3c477460e4ca187094d86f369c -- txin hash
 106             // 05000000 -- txin outnumber
 107             // 69       -- txin scriptSig length
 108             // 463043021f24275c72f952043174daf01d7f713f878625f0522124a3cab48a0a2e12604202201b47742e6697b0ebdd1e4ba49c74baf142a0228ad0e0ee847488994c9dce78470121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
 109             // ffffffff -- txin nSequence
 110             // e1793d4519147782293dd1db6d90e461265d91db2cc6889c37209394d42ad10d -- txin hash
 111             // 05000000 -- txin outnumber
 112             // 6a       -- txin scriptSig length
 113             // 473044022018a0c3d73b2765d75380614ab36ee8e3c937080894a19166128b1e3357b208fb0220233c9609985f535547381431526867ad0255ec4969afe5c360544992ed6b3ed60121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
 114             // ffffffff -- txin nSequence
 115             // 02 -- amount of txouts
 116             // e542000000000000 -- txout value
 117             // 19 -- scriptPubKey length
 118             // 76a91457d84c814b14bd86bf32f106b733baa693db7dc788ac -- scriptPubKey
 119             // 409c000000000000 -- txout value
 120             // 19 -- scriptPubKey length
 121             // 76a91408c8768d5d6bf7c1d9609da4e766c3f1752247b188ac -- scriptPubKey
 122             // 00000000 -- lock time
 123
 124             resultBytes.AddRange(Interop.LEBytes(nVersion));
 125             resultBytes.AddRange(Interop.LEBytes(nTime));
 126             resultBytes.AddRange(VarInt.EncodeVarInt(inputs.LongLength));
 127
 128             foreach(CTxIn input in inputs)
 129             {
 130                 resultBytes.AddRange(input.ToBytes());
 131             }
 132
 133             resultBytes.AddRange(VarInt.EncodeVarInt(outputs.LongLength));
 134
 135             foreach(CTxOut output in outputs)
 136             {
 137                 resultBytes.AddRange(output.ToBytes());
 138             }
 139
 140             resultBytes.AddRange(Interop.LEBytes(nLockTime));
 141
 142             return resultBytes;
 143         }
 144
 145         public override string ToString()
 146         {
 147             StringBuilder sb = new StringBuilder();
 148
 149             sb.AppendFormat("CTransaction(\n nVersion={0},\n nTime={1},\n", nVersion, nTime);
 150
 151             foreach (CTxIn txin in inputs)
 152             {
 153                 sb.AppendFormat(" {0},\n", txin.ToString());
 154             }
 155
 156             foreach (CTxOut txout in outputs)
 157             {
 158                 sb.AppendFormat(" {0},\n", txout.ToString());
 159             }
 160
 161             sb.AppendFormat("nLockTime={0})\n", nLockTime);
 162
 163             return sb.ToString();
 164         }
 165         }
 166 }
 167