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add support for searching for the required gap limit to sign a psbt where global xpubs match

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Craig Raw 2023-11-02 12:37:49 +01:00
parent 12db57c8d7
commit 75730f00ac
1 changed files with 36 additions and 0 deletions
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36
src/main/java/com/sparrowwallet/drongo/wallet/Wallet.java
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@ -24,6 +24,7 @@ import static com.sparrowwallet.drongo.protocol.Transaction.WITNESS_SCALE_FACTOR
public class Wallet extends Persistable implements Comparable<Wallet> {
public static final int DEFAULT_LOOKAHEAD = 20;
public static final int SEARCH_LOOKAHEAD = 4000;
public static final String ALLOW_DERIVATIONS_MATCHING_OTHER_SCRIPT_TYPES_PROPERTY = "com.sparrowwallet.allowDerivationsMatchingOtherScriptTypes";
private String name;
@ -1484,6 +1485,41 @@ public class Wallet extends Persistable implements Comparable<Wallet> {
return signingNodes;
}
public List<Keystore> getSigningKeystores(PSBT psbt) {
List<Keystore> signingKeystores = new ArrayList<>();
for(Map.Entry<ExtendedKey, KeyDerivation> entry : psbt.getExtendedPublicKeys().entrySet()) {
for(Keystore keystore : getKeystores()) {
if(entry.getKey().equals(keystore.getExtendedPublicKey()) && entry.getValue().equals(keystore.getKeyDerivation())) {
signingKeystores.add(keystore);
}
}
}
return signingKeystores;
}
public Integer getRequiredGapLimit(PSBT psbt) {
Wallet copy = this.copy();
for(KeyPurpose keyPurpose : KeyPurpose.DEFAULT_PURPOSES) {
WalletNode purposeNode = copy.getNode(keyPurpose);
purposeNode.fillToIndex(purposeNode.getChildren().size() + SEARCH_LOOKAHEAD);
}
Map<PSBTInput, WalletNode> copySigningNodes = copy.getSigningNodes(psbt);
boolean found = false;
int gapLimit = getGapLimit();
for(KeyPurpose keyPurpose : KeyPurpose.DEFAULT_PURPOSES) {
OptionalInt optHighestIndex = copySigningNodes.values().stream().filter(node -> node.getKeyPurpose() == keyPurpose).mapToInt(WalletNode::getIndex).max();
if(optHighestIndex.isPresent()) {
found = true;
Integer highestUsedIndex = getNode(keyPurpose).getHighestUsedIndex();
gapLimit = Math.max(gapLimit, optHighestIndex.getAsInt() - (highestUsedIndex == null ? -1 : highestUsedIndex));
}
}
return found ? gapLimit : null;
}
/**
* Determines which keystores have signed a PSBT
*