internal PSBTInput(BitcoinStream stream, PSBT parent, uint index, TxIn input) : base(parent) { TxIn = input; Index = index; originalScriptSig = TxIn.ScriptSig ?? Script.Empty; originalWitScript = TxIn.WitScript ?? WitScript.Empty; byte[] k = new byte[0]; byte[] v = new byte[0]; try { stream.ReadWriteAsVarString(ref k); } catch (EndOfStreamException e) { throw new FormatException("Invalid PSBTInput. Failed to Parse key.", e); } while (k.Length != 0) { try { stream.ReadWriteAsVarString(ref v); } catch (EndOfStreamException e) { throw new FormatException("Invalid PSBTInput. Failed to parse key.", e); } switch (k.First()) { case PSBTConstants.PSBT_IN_NON_WITNESS_UTXO: if (k.Length != 1) { throw new FormatException("Invalid PSBTInput. Contains illegal value in key for NonWitnessUTXO"); } if (non_witness_utxo != null) { throw new FormatException("Invalid PSBTInput. Duplicate non_witness_utxo"); } non_witness_utxo = this.GetConsensusFactory().CreateTransaction(); non_witness_utxo.FromBytes(v); break; case PSBTConstants.PSBT_IN_WITNESS_UTXO: if (k.Length != 1) { throw new FormatException("Invalid PSBTInput. Contains illegal value in key for WitnessUTXO"); } if (witness_utxo != null) { throw new FormatException("Invalid PSBTInput. Duplicate witness_utxo"); } if (this.GetConsensusFactory().TryCreateNew <TxOut>(out var txout)) { witness_utxo = txout; } else { witness_utxo = new TxOut(); } witness_utxo.FromBytes(v); break; case PSBTConstants.PSBT_IN_PARTIAL_SIG: var pubkey = new PubKey(k.Skip(1).ToArray()); if (partial_sigs.ContainsKey(pubkey)) { throw new FormatException("Invalid PSBTInput. Duplicate key for partial_sigs"); } partial_sigs.Add(pubkey, new TransactionSignature(v)); break; case PSBTConstants.PSBT_IN_SIGHASH: if (k.Length != 1) { throw new FormatException("Invalid PSBTInput. Contains illegal value in key for SigHash type"); } if (!(sighash_type is null)) { throw new FormatException("Invalid PSBTInput. Duplicate key for sighash_type"); } if (v.Length != 4) { throw new FormatException("Invalid PSBTInput. SigHash Type is not 4 byte"); } var value = Utils.ToUInt32(v, 0, true); if (!Enum.IsDefined(typeof(SigHash), value)) { throw new FormatException($"Invalid PSBTInput Unknown SigHash Type {value}"); } sighash_type = (SigHash)value; break; case PSBTConstants.PSBT_IN_REDEEMSCRIPT: if (k.Length != 1) { throw new FormatException("Invalid PSBTInput. Contains illegal value in key for redeem script"); } if (redeem_script != null) { throw new FormatException("Invalid PSBTInput. Duplicate key for redeem_script"); } redeem_script = Script.FromBytesUnsafe(v); break; case PSBTConstants.PSBT_IN_WITNESSSCRIPT: if (k.Length != 1) { throw new FormatException("Invalid PSBTInput. Contains illegal value in key for witness script"); } if (witness_script != null) { throw new FormatException("Invalid PSBTInput. Duplicate key for redeem_script"); } witness_script = Script.FromBytesUnsafe(v); break; case PSBTConstants.PSBT_IN_BIP32_DERIVATION: var pubkey2 = new PubKey(k.Skip(1).ToArray()); if (hd_keypaths.ContainsKey(pubkey2)) { throw new FormatException("Invalid PSBTInput. Duplicate key for hd_keypaths"); } var masterFingerPrint = new HDFingerprint(v.Take(4).ToArray()); KeyPath path = KeyPath.FromBytes(v.Skip(4).ToArray()); hd_keypaths.Add(pubkey2, new RootedKeyPath(masterFingerPrint, path)); break; case PSBTConstants.PSBT_IN_SCRIPTSIG: if (k.Length != 1) { throw new FormatException("Invalid PSBTInput. Contains illegal value in key for final scriptsig"); } if (final_script_sig != null) { throw new FormatException("Invalid PSBTInput. Duplicate key for final_script_sig"); } final_script_sig = Script.FromBytesUnsafe(v); break; case PSBTConstants.PSBT_IN_SCRIPTWITNESS: if (k.Length != 1) { throw new FormatException("Invalid PSBTInput. Contains illegal value in key for final script witness"); } if (final_script_witness != null) { throw new FormatException("Invalid PSBTInput. Duplicate key for final_script_witness"); } final_script_witness = new WitScript(v); break; default: if (unknown.ContainsKey(k)) { throw new FormatException("Invalid PSBTInput. Duplicate key for unknown value"); } unknown.Add(k, v); break; } stream.ReadWriteAsVarString(ref k); } }
public void Serialize(BitcoinStream stream) { if (stream == null) { throw new ArgumentNullException(nameof(stream)); } // Write the utxo // If there is a non-witness utxo, then don't serialize the witness one. if (witness_utxo != null) { // key stream.ReadWriteAsVarInt(ref defaultKeyLen); var key = PSBTConstants.PSBT_IN_WITNESS_UTXO; stream.ReadWrite(ref key); // value var data = witness_utxo.ToBytes(); stream.ReadWriteAsVarString(ref data); } if (non_witness_utxo != null) { // key stream.ReadWriteAsVarInt(ref defaultKeyLen); var key = PSBTConstants.PSBT_IN_NON_WITNESS_UTXO; stream.ReadWrite(ref key); // value byte[] data = non_witness_utxo.ToBytes(); stream.ReadWriteAsVarString(ref data); } // Write the sighash type if (sighash_type > 0) { stream.ReadWriteAsVarInt(ref defaultKeyLen); var key = PSBTConstants.PSBT_IN_SIGHASH; stream.ReadWrite(ref key); var tmp = Utils.ToBytes((uint)sighash_type, true); stream.ReadWriteAsVarString(ref tmp); } // Write the redeem script if (redeem_script != null) { stream.ReadWriteAsVarInt(ref defaultKeyLen); var key = PSBTConstants.PSBT_IN_REDEEMSCRIPT; stream.ReadWrite(ref key); var value = redeem_script.ToBytes(); stream.ReadWriteAsVarString(ref value); } // Write the witness script if (witness_script != null) { stream.ReadWriteAsVarInt(ref defaultKeyLen); var key = PSBTConstants.PSBT_IN_WITNESSSCRIPT; stream.ReadWrite(ref key); var value = witness_script.ToBytes(); stream.ReadWriteAsVarString(ref value); } // Write any partial signatures foreach (var sig_pair in partial_sigs) { var key = new byte[] { PSBTConstants.PSBT_IN_PARTIAL_SIG }.Concat(sig_pair.Key.ToBytes()); stream.ReadWriteAsVarString(ref key); var sig = sig_pair.Value.ToBytes(); stream.ReadWriteAsVarString(ref sig); } // Write any hd keypaths foreach (var pathPair in hd_keypaths) { var key = new byte[] { PSBTConstants.PSBT_IN_BIP32_DERIVATION }.Concat(pathPair.Key.ToBytes()); stream.ReadWriteAsVarString(ref key); var masterFingerPrint = pathPair.Value.MasterFingerprint; var path = pathPair.Value.KeyPath.ToBytes(); var pathInfo = masterFingerPrint.ToBytes().Concat(path); stream.ReadWriteAsVarString(ref pathInfo); } // Write script sig if (final_script_sig != null) { stream.ReadWriteAsVarInt(ref defaultKeyLen); var key = PSBTConstants.PSBT_IN_SCRIPTSIG; stream.ReadWrite(ref key); byte[] value = final_script_sig.ToBytes(); stream.ReadWriteAsVarString(ref value); } // write script witness if (final_script_witness != null) { stream.ReadWriteAsVarInt(ref defaultKeyLen); var key = PSBTConstants.PSBT_IN_SCRIPTWITNESS; stream.ReadWrite(ref key); var stack = final_script_witness.ToBytes(); stream.ReadWriteAsVarString(ref stack); } // Write unknown things foreach (var entry in unknown) { var k = entry.Key; var v = entry.Value; stream.ReadWriteAsVarString(ref k); stream.ReadWriteAsVarString(ref v); } var sep = PSBTConstants.PSBT_SEPARATOR; stream.ReadWrite(ref sep); }
public void ReadWrite(BitcoinStream stream) { stream.ReadWriteAsVarString(ref _Data); }