mirror of
https://github.com/sparrowwallet/drongo.git
synced 2024-12-26 01:56:44 +00:00
programmatic psbt creation
This commit is contained in:
Craig Raw
parent
f00754b157
commit
9b117cd7f9
7 changed files with 178 additions and 41 deletions
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@ -413,7 +413,7 @@ public class Transaction extends ChildMessage {
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for (int i = 0; i < tx.inputs.size(); i++) {
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TransactionInput input = tx.inputs.get(i);
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input.clearScriptBytes();
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input.setWitness(null);
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input.clearWitness();
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}
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// This step has no purpose beyond being synchronized with Bitcoin Core's bugs. OP_CODESEPARATOR
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@ -96,10 +96,20 @@ public class TransactionInput extends ChildMessage {
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return witness;
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}
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public void setWitness(TransactionWitness witness) {
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void setWitness(TransactionWitness witness) {
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this.witness = witness;
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}
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public void clearWitness() {
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TransactionWitness witness = getWitness();
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if(witness != null) {
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if(getParent() != null) {
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getParent().adjustLength(-witness.getLength());
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}
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setWitness(null);
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}
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}
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public boolean hasWitness() {
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return witness != null && witness.getPushCount() != 0;
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}
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@ -3,7 +3,9 @@ package com.sparrowwallet.drongo.psbt;
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import com.sparrowwallet.drongo.ExtendedKey;
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import com.sparrowwallet.drongo.KeyDerivation;
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import com.sparrowwallet.drongo.Utils;
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import com.sparrowwallet.drongo.crypto.ECKey;
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import com.sparrowwallet.drongo.protocol.*;
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import com.sparrowwallet.drongo.wallet.*;
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import org.bouncycastle.util.encoders.Base64;
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import org.bouncycastle.util.encoders.Hex;
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import org.slf4j.Logger;
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@ -39,14 +41,93 @@ public class PSBT {
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private Transaction transaction = null;
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private Integer version = null;
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private Map<ExtendedKey, KeyDerivation> extendedPublicKeys = new LinkedHashMap<>();
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private Map<String, String> globalProprietary = new LinkedHashMap<>();
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private final Map<ExtendedKey, KeyDerivation> extendedPublicKeys = new LinkedHashMap<>();
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private final Map<String, String> globalProprietary = new LinkedHashMap<>();
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private List<PSBTInput> psbtInputs = new ArrayList<>();
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private List<PSBTOutput> psbtOutputs = new ArrayList<>();
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private final List<PSBTInput> psbtInputs = new ArrayList<>();
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private final List<PSBTOutput> psbtOutputs = new ArrayList<>();
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private static final Logger log = LoggerFactory.getLogger(PSBT.class);
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public PSBT(WalletTransaction walletTransaction) {
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Wallet wallet = walletTransaction.getWallet();
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transaction = new Transaction(walletTransaction.getTransaction().bitcoinSerialize());
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for(TransactionInput input : transaction.getInputs()) {
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input.clearScriptBytes();
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input.clearWitness();
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}
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for(Keystore keystore : walletTransaction.getWallet().getKeystores()) {
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extendedPublicKeys.put(keystore.getExtendedPublicKey(), keystore.getKeyDerivation());
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}
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version = 0;
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int inputIndex = 0;
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for(Iterator<Map.Entry<BlockTransactionHashIndex, WalletNode>> iter = walletTransaction.getSelectedUtxos().entrySet().iterator(); iter.hasNext(); inputIndex++) {
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Map.Entry<BlockTransactionHashIndex, WalletNode> utxoEntry = iter.next();
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Transaction utxo = wallet.getTransactions().get(utxoEntry.getKey().getHash()).getTransaction();
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int utxoIndex = (int)utxoEntry.getKey().getIndex();
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TransactionOutput utxoOutput = utxo.getOutputs().get(utxoIndex);
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TransactionInput txInput = walletTransaction.getTransaction().getInputs().get(inputIndex);
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Script redeemScript = null;
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if(ScriptType.P2SH.isScriptType(utxoOutput.getScript())) {
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redeemScript = txInput.getScriptSig().getFirstNestedScript();
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}
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Script witnessScript = null;
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if(txInput.getWitness() != null) {
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witnessScript = txInput.getWitness().getWitnessScript();
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}
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Map<ECKey, KeyDerivation> derivedPublicKeys = new LinkedHashMap<>();
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for(Keystore keystore : wallet.getKeystores()) {
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WalletNode walletNode = utxoEntry.getValue();
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derivedPublicKeys.put(keystore.getKey(walletNode.getKeyPurpose(), walletNode.getIndex()), keystore.getKeyDerivation());
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}
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PSBTInput psbtInput = new PSBTInput(wallet.getScriptType(), transaction, inputIndex, utxo, utxoIndex, redeemScript, witnessScript, derivedPublicKeys, Collections.emptyMap());
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psbtInputs.add(psbtInput);
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}
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List<WalletNode> outputNodes = new ArrayList<>();
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outputNodes.add(wallet.getWalletAddresses().getOrDefault(walletTransaction.getRecipientAddress(), null));
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outputNodes.add(walletTransaction.getChangeNode());
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for(int outputIndex = 0; outputIndex < outputNodes.size(); outputIndex++) {
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WalletNode outputNode = outputNodes.get(outputIndex);
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if(outputNode == null) {
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PSBTOutput externalRecipientOutput = new PSBTOutput(null, null, Collections.emptyMap(), Collections.emptyMap());
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psbtOutputs.add(externalRecipientOutput);
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} else {
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TransactionOutput txOutput = walletTransaction.getTransaction().getOutputs().get(outputIndex);
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//Construct dummy transaction to spend the UTXO created by this wallet's txOutput
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Transaction transaction = new Transaction();
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TransactionInput spendingInput = wallet.addDummySpendingInput(transaction, outputNode, txOutput);
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Script redeemScript = null;
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if(ScriptType.P2SH.isScriptType(txOutput.getScript())) {
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redeemScript = spendingInput.getScriptSig().getFirstNestedScript();
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}
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Script witnessScript = null;
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if(spendingInput.getWitness() != null) {
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witnessScript = spendingInput.getWitness().getWitnessScript();
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}
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Map<ECKey, KeyDerivation> derivedPublicKeys = new LinkedHashMap<>();
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for(Keystore keystore : wallet.getKeystores()) {
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derivedPublicKeys.put(keystore.getKey(outputNode.getKeyPurpose(), outputNode.getIndex()), keystore.getKeyDerivation());
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}
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PSBTOutput walletOutput = new PSBTOutput(redeemScript, witnessScript, derivedPublicKeys, Collections.emptyMap());
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psbtOutputs.add(walletOutput);
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}
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}
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}
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public PSBT(byte[] psbt) throws PSBTParseException {
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this.psbtBytes = psbt;
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parse();
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@ -390,6 +471,10 @@ public class PSBT {
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return new ArrayList<ExtendedKey>(extendedPublicKeys.keySet());
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}
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public Map<String, String> getGlobalProprietary() {
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return globalProprietary;
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}
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public String toString() {
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try {
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return Hex.toHexString(serialize());
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@ -29,21 +29,39 @@ public class PSBTInput {
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private Transaction nonWitnessUtxo;
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private TransactionOutput witnessUtxo;
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private Map<ECKey, TransactionSignature> partialSignatures = new LinkedHashMap<>();
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private final Map<ECKey, TransactionSignature> partialSignatures = new LinkedHashMap<>();
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private Transaction.SigHash sigHash;
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private Script redeemScript;
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private Script witnessScript;
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private Map<ECKey, KeyDerivation> derivedPublicKeys = new LinkedHashMap<>();
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private final Map<ECKey, KeyDerivation> derivedPublicKeys = new LinkedHashMap<>();
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private Script finalScriptSig;
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private TransactionWitness finalScriptWitness;
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private String porCommitment;
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private Map<String, String> proprietary = new LinkedHashMap<>();
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private final Map<String, String> proprietary = new LinkedHashMap<>();
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private Transaction transaction;
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private int index;
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private final Transaction transaction;
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private final int index;
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private static final Logger log = LoggerFactory.getLogger(PSBTInput.class);
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PSBTInput(ScriptType scriptType, Transaction transaction, int index, Transaction utxo, int utxoIndex, Script redeemScript, Script witnessScript, Map<ECKey, KeyDerivation> derivedPublicKeys, Map<String, String> proprietary) {
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this.transaction = transaction;
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this.index = index;
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sigHash = Transaction.SigHash.ALL;
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if(Arrays.asList(ScriptType.WITNESS_TYPES).contains(scriptType)) {
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this.witnessUtxo = utxo.getOutputs().get(utxoIndex);
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} else {
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this.nonWitnessUtxo = utxo;
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}
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this.redeemScript = redeemScript;
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this.witnessScript = witnessScript;
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this.derivedPublicKeys.putAll(derivedPublicKeys);
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this.proprietary.putAll(proprietary);
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}
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PSBTInput(List<PSBTEntry> inputEntries, Transaction transaction, int index) throws PSBTParseException {
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for(PSBTEntry entry : inputEntries) {
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switch(entry.getKeyType()) {
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@ -226,11 +244,9 @@ public class PSBTInput {
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}
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public ECKey getKeyForSignature(TransactionSignature signature) {
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if(partialSignatures != null) {
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for(Map.Entry<ECKey, TransactionSignature> entry : partialSignatures.entrySet()) {
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if(entry.getValue().equals(signature)) {
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return entry.getKey();
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}
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for(Map.Entry<ECKey, TransactionSignature> entry : partialSignatures.entrySet()) {
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if(entry.getValue().equals(signature)) {
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return entry.getKey();
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}
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}
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@ -2,7 +2,6 @@ package com.sparrowwallet.drongo.psbt;
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import com.sparrowwallet.drongo.KeyDerivation;
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import com.sparrowwallet.drongo.crypto.ECKey;
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import com.sparrowwallet.drongo.crypto.LazyECPoint;
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import com.sparrowwallet.drongo.protocol.Script;
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import org.bouncycastle.util.encoders.Hex;
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import org.slf4j.Logger;
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@ -12,6 +11,8 @@ import java.util.LinkedHashMap;
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import java.util.List;
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import java.util.Map;
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import static com.sparrowwallet.drongo.psbt.PSBTEntry.parseKeyDerivation;
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public class PSBTOutput {
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public static final byte PSBT_OUT_REDEEM_SCRIPT = 0x00;
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public static final byte PSBT_OUT_WITNESS_SCRIPT = 0x01;
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@ -20,11 +21,18 @@ public class PSBTOutput {
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private Script redeemScript;
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private Script witnessScript;
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private Map<LazyECPoint, KeyDerivation> derivedPublicKeys = new LinkedHashMap<>();
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private Map<String, String> proprietary = new LinkedHashMap<>();
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private final Map<ECKey, KeyDerivation> derivedPublicKeys = new LinkedHashMap<>();
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private final Map<String, String> proprietary = new LinkedHashMap<>();
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private static final Logger log = LoggerFactory.getLogger(PSBTOutput.class);
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PSBTOutput(Script redeemScript, Script witnessScript, Map<ECKey, KeyDerivation> derivedPublicKeys, Map<String, String> proprietary) {
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this.redeemScript = redeemScript;
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this.witnessScript = witnessScript;
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this.derivedPublicKeys.putAll(derivedPublicKeys);
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this.proprietary.putAll(proprietary);
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}
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PSBTOutput(List<PSBTEntry> outputEntries) throws PSBTParseException {
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for(PSBTEntry entry : outputEntries) {
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switch (entry.getKeyType()) {
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@ -42,10 +50,10 @@ public class PSBTOutput {
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break;
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case PSBT_OUT_BIP32_DERIVATION:
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entry.checkOneBytePlusPubKey();
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LazyECPoint publicKey = new LazyECPoint(ECKey.CURVE.getCurve(), entry.getKeyData());
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KeyDerivation keyDerivation = PSBTEntry.parseKeyDerivation(entry.getData());
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this.derivedPublicKeys.put(publicKey, keyDerivation);
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log.debug("Found output bip32_derivation with master fingerprint " + keyDerivation.getMasterFingerprint() + " at path " + keyDerivation.getDerivationPath() + " public key " + publicKey);
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ECKey derivedPublicKey = ECKey.fromPublicOnly(entry.getKeyData());
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KeyDerivation keyDerivation = parseKeyDerivation(entry.getData());
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this.derivedPublicKeys.put(derivedPublicKey, keyDerivation);
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log.debug("Found output bip32_derivation with master fingerprint " + keyDerivation.getMasterFingerprint() + " at path " + keyDerivation.getDerivationPath() + " public key " + derivedPublicKey);
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break;
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case PSBT_OUT_PROPRIETARY:
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proprietary.put(Hex.toHexString(entry.getKeyData()), Hex.toHexString(entry.getData()));
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@ -65,11 +73,11 @@ public class PSBTOutput {
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return witnessScript;
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}
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public KeyDerivation getKeyDerivation(LazyECPoint publicKey) {
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public KeyDerivation getKeyDerivation(ECKey publicKey) {
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return derivedPublicKeys.get(publicKey);
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}
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public Map<LazyECPoint, KeyDerivation> getDerivedPublicKeys() {
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public Map<ECKey, KeyDerivation> getDerivedPublicKeys() {
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return derivedPublicKeys;
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}
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@ -11,6 +11,7 @@ import com.sparrowwallet.drongo.protocol.*;
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import java.util.*;
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import java.util.stream.Collectors;
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import java.util.stream.IntStream;
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import static com.sparrowwallet.drongo.protocol.Transaction.WITNESS_SCALE_FACTOR;
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@ -233,6 +234,23 @@ public class Wallet {
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}
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}
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public boolean isWalletAddress(Address address) {
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return getWalletAddresses().containsKey(address);
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}
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public Map<Address, WalletNode> getWalletAddresses() {
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Map<Address, WalletNode> walletAddresses = new LinkedHashMap<>();
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getWalletAddresses(walletAddresses, getNode(KeyPurpose.RECEIVE));
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getWalletAddresses(walletAddresses, getNode(KeyPurpose.CHANGE));
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return walletAddresses;
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}
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private void getWalletAddresses(Map<Address, WalletNode> walletAddresses, WalletNode purposeNode) {
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for(WalletNode addressNode : purposeNode.getChildren()) {
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walletAddresses.put(getAddress(addressNode), addressNode);
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}
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}
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public boolean isWalletTxo(BlockTransactionHashIndex txo) {
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return getWalletTxos().containsKey(txo);
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}
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@ -386,20 +404,7 @@ public class Wallet {
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for(Map.Entry<BlockTransactionHashIndex, WalletNode> selectedUtxo : selectedUtxos.entrySet()) {
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Transaction prevTx = getTransactions().get(selectedUtxo.getKey().getHash()).getTransaction();
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TransactionOutput prevTxOut = prevTx.getOutputs().get((int)selectedUtxo.getKey().getIndex());
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if(getPolicyType().equals(PolicyType.SINGLE)) {
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ECKey pubKey = getPubKey(selectedUtxo.getValue());
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TransactionSignature signature = TransactionSignature.dummy();
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getScriptType().addSpendingInput(transaction, prevTxOut, pubKey, signature);
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} else if(getPolicyType().equals(PolicyType.MULTI)) {
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List<ECKey> pubKeys = getPubKeys(selectedUtxo.getValue());
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int threshold = getDefaultPolicy().getNumSignaturesRequired();
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List<TransactionSignature> signatures = new ArrayList<>(threshold);
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for(int i = 0; i < threshold; i++) {
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signatures.add(TransactionSignature.dummy());
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}
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getScriptType().addMultisigSpendingInput(transaction, prevTxOut, threshold, pubKeys, signatures);
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}
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addDummySpendingInput(transaction, selectedUtxo.getValue(), prevTxOut);
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}
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//Add recipient output
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@ -451,6 +456,20 @@ public class Wallet {
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}
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}
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public TransactionInput addDummySpendingInput(Transaction transaction, WalletNode walletNode, TransactionOutput prevTxOut) {
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if(getPolicyType().equals(PolicyType.SINGLE)) {
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ECKey pubKey = getPubKey(walletNode);
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return getScriptType().addSpendingInput(transaction, prevTxOut, pubKey, TransactionSignature.dummy());
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} else if(getPolicyType().equals(PolicyType.MULTI)) {
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List<ECKey> pubKeys = getPubKeys(walletNode);
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int threshold = getDefaultPolicy().getNumSignaturesRequired();
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List<TransactionSignature> signatures = IntStream.range(0, threshold).mapToObj(i -> TransactionSignature.dummy()).collect(Collectors.toList());
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return getScriptType().addMultisigSpendingInput(transaction, prevTxOut, threshold, pubKeys, signatures);
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} else {
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throw new UnsupportedOperationException("Cannot create transaction for policy type " + getPolicyType());
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}
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}
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private Map<BlockTransactionHashIndex, WalletNode> selectInputs(List<UtxoSelector> utxoSelectors, Long targetValue, double feeRate, double longTermFeeRate, boolean groupByAddress, boolean includeMempoolChange) throws InsufficientFundsException {
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List<OutputGroup> utxoPool = getGroupedUtxos(feeRate, longTermFeeRate, groupByAddress);
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@ -39,8 +39,7 @@ public class WalletTransaction {
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}
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public PSBT createPSBT() {
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//TODO: Create PSBT
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return null;
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return new PSBT(this);
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}
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public Wallet getWallet() {
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