Novacoin/CTransaction.cs

   1 \feffusing System;
   2 using System.Collections.Generic;
   3
   4 namespace Novacoin
   5 {
   6         /// <summary>
   7         /// Represents the transaction. Any transaction must provide one input and one output at least.
   8         /// </summary>
   9         public class CTransaction
  10         {
  11                 /// <summary>
  12                 /// Version of transaction schema.
  13                 /// </summary>
  14                 public uint nVersion = 1;
  15
  16                 /// <summary>
  17                 /// Transaction timestamp.
  18                 /// </summary>
  19                 public uint nTime = 0;
  20
  21                 /// <summary>
  22                 /// Array of transaction inputs
  23                 /// </summary>
  24                 public CTxIn[] inputs;
  25
  26                 /// <summary>
  27                 /// Array of transaction outputs
  28                 /// </summary>
  29                 public CTxOut[] outputs;
  30
  31                 /// <summary>
  32                 /// Block height or timestamp when transaction is final
  33                 /// </summary>
  34                 public uint nLockTime = 0;
  35
  36         /// <summary>
  37         /// Parse byte sequence and initialize new instance of CTransaction
  38         /// </summary>
  39         /// <param name="txBytes"></param>
  40                 public CTransaction (IList<byte> txBytes)
  41                 {
  42             WrappedList<byte> wBytes = new WrappedList<byte>(txBytes);
  43
  44             nVersion = Interop.LEBytesToUInt32(wBytes.GetItems(4));
  45             nTime = Interop.LEBytesToUInt32(wBytes.GetItems(4));
  46
  47             int nInputs = (int)VarInt.ReadVarInt(wBytes);
  48             inputs = new CTxIn[nInputs];
  49
  50             for (int nCurrentInput = 0; nCurrentInput < nInputs; nCurrentInput++)
  51             {
  52                 // Fill inputs array
  53                 inputs[nCurrentInput].txID = new Hash256(wBytes.GetItems(32));
  54                 inputs[nCurrentInput].n = Interop.LEBytesToUInt32(wBytes.GetItems(4));
  55                 inputs[nCurrentInput].scriptSig = wBytes.GetItems((int)VarInt.ReadVarInt(wBytes));
  56                 inputs[nCurrentInput].nSequence = Interop.LEBytesToUInt32(wBytes.GetItems(4));
  57             }
  58
  59             int nOutputs = (int)VarInt.ReadVarInt(wBytes);
  60             outputs = new CTxOut[nOutputs];
  61
  62             for (int nCurrentOutput = 0; nCurrentOutput < nInputs; nCurrentOutput++)
  63             {
  64                 // Fill outputs array
  65                 outputs[nCurrentOutput].nValue = Interop.LEBytesToUInt64(wBytes.GetItems(8));
  66                 outputs[nCurrentOutput].scriptPubKey = wBytes.GetItems((int)VarInt.ReadVarInt(wBytes));
  67             }
  68
  69             nLockTime = Interop.LEBytesToUInt32(wBytes.GetItems(4));
  70                 }
  71
  72         IList<byte> ToBytes()
  73         {
  74             List<byte> resultBytes = new List<byte>();
  75
  76             // Typical transaction example:
  77             //
  78             // 01000000 -- version
  79             // 78b4c953 -- timestamp
  80             // 06       -- amount of txins
  81             // 340d96b77ec4ee9d42b31cadc2fab911e48d48c36274d516f226d5e85bbc512c -- txin hash
  82             // 01000000 -- txin outnumber
  83             // 6b       -- txin scriptSig length
  84             // 483045022100c8df1fc17b6ea1355a39b92146ec67b3b53565e636e028010d3a8a87f6f805f202203888b9b74df03c3960773f2a81b2dfd1efb08bb036a8f3600bd24d5ed694cd5a0121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
  85             // ffffffff -- txin nSequence
  86             // 364c640420de8fa77313475970bf09ce4d0b1f8eabb8f1d6ea49d90c85b202ee -- txin hash
  87             // 01000000 -- txin outnumber
  88             // 6b       -- txin scriptSig length
  89             // 483045022100b651bf3a6835d714d2c990c742136d769258d0170c9aac24803b986050a8655b0220623651077ff14b0a9d61e30e30f2c15352f70491096f0ec655ae1c79a44e53aa0121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
  90             // ffffffff -- txin nSequence
  91             // 7adbd5f2e521f567bfea2cb63e65d55e66c83563fe253464b75184a5e462043d -- txin hash
  92             // 00000000 -- txin outnumber
  93             // 6a       -- txin scriptSig length
  94             // 4730440220183609f2b995993acc9df241aff722d48b9a731b0cd376212934565723ed81f00220737e7ce75ef39bdc061d0dcdba3ee24e43b899696a7c96803cee0a79e1f78ecb0121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
  95             // ffffffff -- txin nSequence
  96             // 999eb03e00a41c2f9fde8865a554ceebbc48d30f4c8ba22dd88da8c9b46fa920 -- txin hash
  97             // 03000000 -- txin outnumber
  98             // 6b       -- txin scriptSig length
  99             // 483045022100ec1ab104ef086ba79b0f2611ebf1bfdd22a7a1020f6630fa1c6707546626e0db022056093d4048a999392185ccc735ef736a5497bd68f60b42e6c0c93ba770b54d010121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
 100             // ffffffff -- txin nSequence
 101             // c0543b86be257ddd85b014a76718a70fab9eaa3c477460e4ca187094d86f369c -- txin hash
 102             // 05000000 -- txin outnumber
 103             // 69       -- txin scriptSig length
 104             // 463043021f24275c72f952043174daf01d7f713f878625f0522124a3cab48a0a2e12604202201b47742e6697b0ebdd1e4ba49c74baf142a0228ad0e0ee847488994c9dce78470121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
 105             // ffffffff -- txin nSequence
 106             // e1793d4519147782293dd1db6d90e461265d91db2cc6889c37209394d42ad10d -- txin hash
 107             // 05000000 -- txin outnumber
 108             // 6a       -- txin scriptSig length
 109             // 473044022018a0c3d73b2765d75380614ab36ee8e3c937080894a19166128b1e3357b208fb0220233c9609985f535547381431526867ad0255ec4969afe5c360544992ed6b3ed60121030dd13e6d3c63fa10cc0b6bf968fbbfcb9a988b333813b1f22d04fa60e344bc4c -- txin scriptSig
 110             // ffffffff -- txin nSequence
 111             // 02 -- amount of txouts
 112             // e542000000000000 -- txout value
 113             // 19 -- scriptPubKey length
 114             // 76a91457d84c814b14bd86bf32f106b733baa693db7dc788ac -- scriptPubKey
 115             // 409c000000000000 -- txout value
 116             // 19 -- scriptPubKey length
 117             // 76a91408c8768d5d6bf7c1d9609da4e766c3f1752247b188ac -- scriptPubKey
 118             // 00000000 -- lock time
 119
 120             resultBytes.AddRange(Interop.LEBytes(nVersion));
 121             resultBytes.AddRange(Interop.LEBytes(nTime));
 122             resultBytes.AddRange(VarInt.EncodeVarInt(inputs.LongLength));
 123
 124             foreach(CTxIn input in inputs)
 125             {
 126                 resultBytes.AddRange(input.ToBytes());
 127             }
 128
 129             resultBytes.AddRange(VarInt.EncodeVarInt(outputs.LongLength));
 130
 131             foreach(CTxOut output in outputs)
 132             {
 133                 resultBytes.AddRange(output.ToBytes());
 134             }
 135
 136             resultBytes.AddRange(Interop.LEBytes(nLockTime));
 137
 138             return resultBytes;
 139
 140         }
 141         }
 142 }
 143