\feffusing System;
using System.Linq;
using System.Text;
-
-using System.Collections;
using System.Collections.Generic;
namespace Novacoin
/// <summary>
/// Create new OP_PUSHDATAn operator and add it to opcode bytes list
/// </summary>
- /// <param name="dataBytes">List of data bytes</param>
- public void PushData(IList<byte> dataBytes)
+ /// <param name="dataBytes">Set of data bytes</param>
+ public void PushData(IEnumerable<byte> dataBytes)
{
long nCount = dataBytes.LongCount();
/// Is it true that script doesn't contain anything except push value operations?
/// </summary>
/// <returns>Checking result</returns>
- public bool IsPushonly()
+ public bool IsPushonly
{
- WrappedList<byte> wCodeBytes = new WrappedList<byte>(codeBytes);
-
- opcodetype opcode; // Current opcode
- IEnumerable<byte> pushArgs; // OP_PUSHDATAn argument
-
- // Scan opcodes sequence
- while (ScriptOpcode.GetOp(ref wCodeBytes, out opcode, out pushArgs))
+ get
{
- if (opcode > opcodetype.OP_16)
+ WrappedList<byte> wCodeBytes = new WrappedList<byte>(codeBytes);
+
+ opcodetype opcode; // Current opcode
+ IEnumerable<byte> pushArgs; // OP_PUSHDATAn argument
+
+ // Scan opcodes sequence
+ while (ScriptCode.GetOp(ref wCodeBytes, out opcode, out pushArgs))
{
- // We don't allow control opcodes here
- return false;
+ if (opcode > opcodetype.OP_16)
+ {
+ // We don't allow control opcodes here
+ return false;
+ }
}
- }
- return true;
+ return true;
+ }
}
/// <summary>
/// Is it true that script doesn't contain non-canonical push operations?
/// </summary>
/// <returns>Checking result</returns>
- public bool HashOnlyCanonicalPushes()
+ public bool HasOnlyCanonicalPushes
{
- WrappedList<byte> wCodeBytes = new WrappedList<byte>(codeBytes);
-
- opcodetype opcode; // Current opcode
- IEnumerable<byte> pushArgs; // OP_PUSHDATAn argument
-
- // Scan opcodes sequence
- while (ScriptOpcode.GetOp(ref wCodeBytes, out opcode, out pushArgs))
+ get
{
- byte[] data = pushArgs.ToArray();
+ WrappedList<byte> wCodeBytes = new WrappedList<byte>(codeBytes);
- if (opcode < opcodetype.OP_PUSHDATA1 && opcode > opcodetype.OP_0 && (data.Length == 1 && data[0] <= 16))
- {
- // Could have used an OP_n code, rather than a 1-byte push.
- return false;
- }
- if (opcode == opcodetype.OP_PUSHDATA1 && data.Length < (int)opcodetype.OP_PUSHDATA1)
- {
- // Could have used a normal n-byte push, rather than OP_PUSHDATA1.
- return false;
- }
- if (opcode == opcodetype.OP_PUSHDATA2 && data.Length <= 0xFF)
- {
- // Could have used an OP_PUSHDATA1.
- return false;
- }
- if (opcode == opcodetype.OP_PUSHDATA4 && data.LongLength <= 0xFFFF)
+ opcodetype opcode; // Current opcode
+ IEnumerable<byte> pushArgs; // OP_PUSHDATAn argument
+
+ // Scan opcodes sequence
+ while (ScriptCode.GetOp(ref wCodeBytes, out opcode, out pushArgs))
{
- // Could have used an OP_PUSHDATA2.
- return false;
+ byte[] data = pushArgs.ToArray();
+
+ if (opcode < opcodetype.OP_PUSHDATA1 && opcode > opcodetype.OP_0 && (data.Length == 1 && data[0] <= 16))
+ {
+ // Could have used an OP_n code, rather than a 1-byte push.
+ return false;
+ }
+ if (opcode == opcodetype.OP_PUSHDATA1 && data.Length < (int)opcodetype.OP_PUSHDATA1)
+ {
+ // Could have used a normal n-byte push, rather than OP_PUSHDATA1.
+ return false;
+ }
+ if (opcode == opcodetype.OP_PUSHDATA2 && data.Length <= 0xFF)
+ {
+ // Could have used an OP_PUSHDATA1.
+ return false;
+ }
+ if (opcode == opcodetype.OP_PUSHDATA4 && data.LongLength <= 0xFFFF)
+ {
+ // Could have used an OP_PUSHDATA2.
+ return false;
+ }
}
- }
- return true;
+ return true;
+ }
}
/// <summary>
/// Quick test for pay-to-script-hash CScripts
/// </summary>
/// <returns>Checking result</returns>
- public bool IsPayToScriptHash()
+ public bool IsPayToScriptHash
+ {
+ get
+ {
+ // Sender provides redeem script hash, receiver provides signature list and redeem script
+ // OP_HASH160 20 [20 byte hash] OP_EQUAL
+ return (codeBytes.Count() == 23 &&
+ codeBytes[0] == (byte)opcodetype.OP_HASH160 &&
+ codeBytes[1] == 0x14 && // 20 bytes hash length prefix
+ codeBytes[22] == (byte)opcodetype.OP_EQUAL);
+ }
+ }
+
+ /// <summary>
+ /// Quick test for pay-to-pubkeyhash CScripts
+ /// </summary>
+ /// <returns>Checking result</returns>
+ public bool IsPayToPubKeyHash
{
- return (codeBytes.Count() == 23 &&
- codeBytes[0] == (byte)opcodetype.OP_HASH160 &&
- codeBytes[1] == 0x14 &&
- codeBytes[22] == (byte)opcodetype.OP_EQUAL);
+ get
+ {
+ // Sender provides hash of pubkey, receiver provides signature and pubkey
+ // OP_DUP OP_HASH160 20 [20 byte hash] OP_EQUALVERIFY OP_CHECKSIG
+ return (codeBytes.Count == 25 &&
+ codeBytes[0] == (byte)opcodetype.OP_DUP &&
+ codeBytes[1] == (byte)opcodetype.OP_HASH160 &&
+ codeBytes[2] == 0x14 && // 20 bytes hash length prefix
+ codeBytes[23] == (byte)opcodetype.OP_EQUALVERIFY &&
+ codeBytes[24] == (byte)opcodetype.OP_CHECKSIG);
+ }
}
/// <summary>
opcodetype lastOpcode = opcodetype.OP_INVALIDOPCODE;
// Scan opcodes sequence
- while (ScriptOpcode.GetOp(ref wCodeBytes, out opcode, out pushArgs))
+ while (ScriptCode.GetOp(ref wCodeBytes, out opcode, out pushArgs))
{
if (opcode == opcodetype.OP_CHECKSIG || opcode == opcodetype.OP_CHECKSIGVERIFY)
{
{
if (fAccurate && lastOpcode >= opcodetype.OP_1 && lastOpcode <= opcodetype.OP_16)
{
- nCount += ScriptOpcode.DecodeOP_N(lastOpcode);
+ nCount += ScriptCode.DecodeOP_N(lastOpcode);
}
else
{
/// <returns>SigOps count</returns>
public int GetSigOpCount(CScript scriptSig)
{
- if (!IsPayToScriptHash())
+ if (!IsPayToScriptHash)
{
return GetSigOpCount(true);
}
opcodetype opcode; // Current opcode
IEnumerable<byte> pushArgs; // OP_PUSHDATAn argument
- while (ScriptOpcode.GetOp(ref wScriptSig, out opcode, out pushArgs))
+ while (ScriptCode.GetOp(ref wScriptSig, out opcode, out pushArgs))
{
if (opcode > opcodetype.OP_16)
{
}
+ /// <summary>
+ /// Set pay-to-pubkey destination.
+ /// </summary>
+ /// <param name="pubKey">Instance of CPubKey.</param>
+ public void SetDestination(CPubKey pubKey)
+ {
+ codeBytes.Clear();
+ PushData(pubKey.PublicBytes);
+ AddOp(opcodetype.OP_CHECKSIG);
+ }
+
+ /// <summary>
+ /// Set pay-to-pubkeyhash destination
+ /// </summary>
+ /// <param name="ID">Public key hash</param>
public void SetDestination(CKeyID ID)
{
codeBytes.Clear();
AddOp(opcodetype.OP_DUP);
AddOp(opcodetype.OP_HASH160);
AddHash(ID);
- AddOp(opcodetype.OP_EQUAL);
+ AddOp(opcodetype.OP_EQUALVERIFY);
+ AddOp(opcodetype.OP_CHECKSIG);
}
+ /// <summary>
+ /// Set pay-to-scripthash destination
+ /// </summary>
+ /// <param name="ID">Script hash</param>
public void SetDestination(CScriptID ID)
{
codeBytes.Clear();
AddOp(opcodetype.OP_EQUAL);
}
- public void SetMultiSig(int nRequired, IEnumerable<CKey> keys)
+ /// <summary>
+ /// Reset script code buffer.
+ /// </summary>
+ public void SetNullDestination()
+ {
+ codeBytes.Clear();
+ }
+
+ /// <summary>
+ /// Set multisig destination.
+ /// </summary>
+ /// <param name="nRequired">Amount of required signatures.</param>
+ /// <param name="keys">Set of public keys.</param>
+ public void SetMultiSig(int nRequired, IEnumerable<CPubKey> keys)
{
codeBytes.Clear();
- AddOp(ScriptOpcode.EncodeOP_N(nRequired));
+ AddOp(ScriptCode.EncodeOP_N(nRequired));
- foreach (CKey key in keys)
+ foreach (CPubKey key in keys)
{
- PushData(key.GetPubKey().Raw);
+ PushData(key.PublicBytes.ToList());
}
- AddOp(ScriptOpcode.EncodeOP_N(keys.Count()));
+ AddOp(ScriptCode.EncodeOP_N(keys.Count()));
AddOp(opcodetype.OP_CHECKMULTISIG);
}
/// <summary>
+ /// Access to script code.
+ /// </summary>
+ public IEnumerable<byte> Bytes
+ {
+ get { return codeBytes; }
+ }
+
+ /// <summary>
/// Disassemble current script code
/// </summary>
/// <returns>Code listing</returns>
opcodetype opcode; // Current opcode
IEnumerable<byte> pushArgs; // OP_PUSHDATAn argument
- while (ScriptOpcode.GetOp(ref wCodeBytes, out opcode, out pushArgs))
+ while (ScriptCode.GetOp(ref wCodeBytes, out opcode, out pushArgs))
{
if (sb.Length != 0)
{
if (0 <= opcode && opcode <= opcodetype.OP_PUSHDATA4)
{
- sb.Append(ScriptOpcode.ValueString(pushArgs));
+ sb.Append(ScriptCode.ValueString(pushArgs));
}
else
{
- sb.Append(ScriptOpcode.GetOpName(opcode));
+ sb.Append(ScriptCode.GetOpName(opcode));
}
}
git://git.novaco.in / NovacoinLibrary.git / blobdiff