X-Git-Url: https://git.novaco.in/?a=blobdiff_plain;f=Novacoin%2FCTxIn.cs;h=067ad4639dabd9b3c46f9df6287e8c30473c4bce;hb=be9d844557911f95165d2c9875c4f5b2822cfc92;hp=4e6c615cb92f00ba1fa3d0688d5b49968980afc2;hpb=8b06904374c83d9e4216bcd202913c5e5ce10442;p=NovacoinLibrary.git

diff --git a/Novacoin/CTxIn.cs b/Novacoin/CTxIn.cs
index 4e6c615..067ad46 100644
--- a/Novacoin/CTxIn.cs
+++ b/Novacoin/CTxIn.cs
@@ -1,45 +1,180 @@
-using System;
+/**
+ *  Novacoin classes library
+ *  Copyright (C) 2015 Alex D. (balthazar.ad@gmail.com)
+
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as
+ *  published by the Free Software Foundation, either version 3 of the
+ *  License, or (at your option) any later version.
+
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+using System;
 using System.Text;
+using System.Collections.Generic;
+using System.IO;
 
 namespace Novacoin
 {
-	/// <summary>
-	/// Transaction input.
-	/// </summary>
-	public class CTxIn
-	{
-		/// <summary>
-		/// Hash of parent transaction.
-		/// </summary>
-		public Hash256 txID = new Hash256();
+    [Serializable]
+    public class TxInConstructorException : Exception
+    {
+        public TxInConstructorException()
+        {
+        }
 
-		/// <summary>
-		/// Parent input number.
-		/// </summary>
-		public uint nInput = 0;
+        public TxInConstructorException(string message)
+                : base(message)
+        {
+        }
+
+        public TxInConstructorException(string message, Exception inner)
+                : base(message, inner)
+        {
+        }
+    }
+
+    /// <summary>
+    /// Transaction input.
+    /// </summary>
+    public class CTxIn
+	{
+        /// <summary>
+        /// Previous input data
+        /// </summary>
+        public COutPoint prevout;
 
 		/// <summary>
 		/// First half of script, signatures for the scriptPubKey
 		/// </summary>
-		public byte[] scriptSig;
+        public CScript scriptSig;
 
 		/// <summary>
 		/// Transaction variant number, irrelevant if nLockTime isn't specified. Its value is 0xffffffff by default.
 		/// </summary>
-		public uint nSequence = 0xffffffff;
+        public uint nSequence = uint.MaxValue;
 
-		public CTxIn ()
-		{
-		}
+        /// <summary>
+        /// Initialize new CTxIn instance as copy of another one.
+        /// </summary>
+        /// <param name="i">CTxIn instance.</param>
+        public CTxIn(CTxIn i)
+        {
+            prevout = new COutPoint(i.prevout);
+            scriptSig = i.scriptSig;
+            nSequence = i.nSequence;
+        }
+
+        /// <summary>
+        /// Initialize an empty instance of CTxIn class
+        /// </summary>
+        public CTxIn()
+        {
+            prevout = new COutPoint();
+            scriptSig = new CScript();
+        }
 
-		public override string ToString ()
+        /// <summary>
+        /// Read vin list from byte sequence.
+        /// </summary>
+        /// <param name="wBytes">Reference to byte sequence</param>
+        /// <returns>Inputs array</returns>
+        public static CTxIn[] ReadTxInList(ref ByteQueue wBytes)
+        {
+            try
+            {
+                // Get amount
+                int nInputs = (int)wBytes.GetVarInt();
+                var vin = new CTxIn[nInputs];
+
+                for (int nIndex = 0; nIndex < nInputs; nIndex++)
+                {
+                    // Fill inputs array
+                    vin[nIndex] = new CTxIn();
+                    vin[nIndex].prevout = new COutPoint(wBytes.Get(36));
+                    vin[nIndex].scriptSig = new CScript(wBytes.Get((int)wBytes.GetVarInt()));
+                    vin[nIndex].nSequence = BitConverter.ToUInt32(wBytes.Get(4), 0);
+                }
+
+                // Return inputs array
+                return vin;
+            }
+            catch (Exception e)
+            {
+                throw new TxInConstructorException("Desirealization failed.", e);
+            }
+        }
+
+        /// <summary>
+        /// Serialized size
+        /// </summary>
+        public int Size
+        {
+            get {
+                int nSize = 40; // COutPoint, nSequence
+                nSize += VarInt.GetEncodedSize(scriptSig.Size);
+                nSize += scriptSig.Size;
+
+                return nSize;
+            }
+        }
+
+        /// <summary>
+        /// Get raw bytes representation of our input.
+        /// </summary>
+        /// <returns>Byte sequence.</returns>
+        public static implicit operator byte[] (CTxIn input)
+        {
+            var stream = new MemoryStream();
+            var writer = new BinaryWriter(stream);
+
+            writer.Write(input.prevout); // prevout
+            writer.Write(VarInt.EncodeVarInt(input.scriptSig.Size)); // scriptSig length
+            writer.Write(input.scriptSig); // scriptSig
+            writer.Write(input.nSequence); // nSequence
+
+            var inputBytes = stream.ToArray();
+            writer.Close();
+            return inputBytes;
+        }
+
+        public bool IsFinal
+        {
+            get { return (nSequence == uint.MaxValue); }
+        }
+        public override string ToString ()
 		{
 			StringBuilder sb = new StringBuilder ();
-			sb.AppendFormat ("CTxIn(txId={0},n={1},scriptSig={2}", nInput, nInput, scriptSig.ToString());
 
-			return sb.ToString ();
+            sb.AppendFormat("CTxIn(");
+            sb.Append(prevout.ToString());
+
+            if(prevout.IsNull)
+            {
+                sb.AppendFormat(", coinbase={0}", Interop.ToHex((byte[])scriptSig));
+            }
+            else
+            {
+                sb.AppendFormat(", scriptsig={0}", scriptSig.ToString());
+            }
+
+            if (nSequence != uint.MaxValue)
+            {
+                sb.AppendFormat(", nSequence={0}", nSequence);
+            }
+
+            sb.Append(")");
+
+
+            return sb.ToString ();
 		}
 
 	}
 }
-