sign psbt from a transient scanned seed (seedqr, compactseedqr, ur:crypto-seed, ur:crypto-bip39 supported)

drongo

@@ -1 +1 @@
-Subproject commit eddd6406efc20b83e659d59faa16189417b0f5ed
+Subproject commit 38deacaeec757acaaaedada7c17e9338564cb389

src/main/java/com/sparrowwallet/sparrow/AppController.java

@@ -1732,6 +1732,10 @@ public class AppController implements Initializable {
         }
     }
 
+    private void addTransactionTab(Transaction transaction, TransactionView initialView, Integer initialIndex) {
+        addTransactionTab(null, null, transaction, null, null, initialView, initialIndex);
+    }
+
     private void addTransactionTab(BlockTransaction blockTransaction, TransactionView initialView, Integer initialIndex) {
         addTransactionTab(null, null, blockTransaction.getTransaction(), null, blockTransaction, initialView, initialIndex);
     }
@@ -2588,7 +2592,11 @@ public class AppController implements Initializable {
     @Subscribe
     public void viewTransaction(ViewTransactionEvent event) {
         if(tabs.getScene().getWindow().equals(event.getWindow())) {
-            addTransactionTab(event.getBlockTransaction(), event.getInitialView(), event.getInitialIndex());
+            if(event.getBlockTransaction() != null) {
+                addTransactionTab(event.getBlockTransaction(), event.getInitialView(), event.getInitialIndex());
+            } else {
+                addTransactionTab(event.getTransaction(), event.getInitialView(), event.getInitialIndex());
+            }
         }
     }
 

src/main/java/com/sparrowwallet/sparrow/control/QRScanDialog.java

@@ -10,15 +10,14 @@ import com.sparrowwallet.drongo.address.P2PKHAddress;
 import com.sparrowwallet.drongo.address.P2SHAddress;
 import com.sparrowwallet.drongo.address.P2WPKHAddress;
 import com.sparrowwallet.drongo.crypto.*;
-import com.sparrowwallet.drongo.policy.Policy;
-import com.sparrowwallet.drongo.policy.PolicyType;
 import com.sparrowwallet.drongo.protocol.Base43;
 import com.sparrowwallet.drongo.protocol.ScriptType;
 import com.sparrowwallet.drongo.protocol.Transaction;
 import com.sparrowwallet.drongo.psbt.PSBT;
 import com.sparrowwallet.drongo.psbt.PSBTParseException;
 import com.sparrowwallet.drongo.uri.BitcoinURI;
-import com.sparrowwallet.drongo.wallet.Keystore;
+import com.sparrowwallet.drongo.wallet.DeterministicSeed;
+import com.sparrowwallet.drongo.wallet.SeedQR;
 import com.sparrowwallet.drongo.wallet.Wallet;
 import com.sparrowwallet.hummingbird.LegacyURDecoder;
 import com.sparrowwallet.hummingbird.registry.*;
@@ -257,6 +256,7 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
                 BitcoinURI bitcoinURI;
                 Address address;
                 ExtendedKey extendedKey;
+                DeterministicSeed seed;
                 try {
                     extendedKey = ExtendedKey.fromDescriptor(qrtext);
                     result = new Result(extendedKey);
@@ -334,6 +334,22 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
                     //Ignore, not parseable as base43 decoded bytes
                 }
 
+                try {
+                    seed = SeedQR.getSeed(qrtext);
+                    result = new Result(seed);
+                    return;
+                } catch(Exception e) {
+                    //Ignore, not parseable as a SeedQR
+                }
+
+                try {
+                    seed = SeedQR.getSeed(qrResult.getRawBytes());
+                    result = new Result(seed);
+                    return;
+                } catch(Exception e) {
+                    //Ignore, not parseable as a CompactSeedQR
+                }
+
                 result = new Result(qrtext);
             }
         }
@@ -401,6 +417,14 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
                     CryptoAccount cryptoAccount = (CryptoAccount)ur.decodeFromRegistry();
                     List<Wallet> wallets = getWallets(cryptoAccount);
                     return new Result(wallets);
+                } else if(urRegistryType.equals(RegistryType.CRYPTO_SEED)) {
+                    CryptoSeed cryptoSeed = (CryptoSeed)ur.decodeFromRegistry();
+                    DeterministicSeed seed = getSeed(cryptoSeed);
+                    return new Result(seed);
+                } else if(urRegistryType.equals(RegistryType.CRYPTO_BIP39)) {
+                    CryptoBip39 cryptoBip39 = (CryptoBip39)ur.decodeFromRegistry();
+                    DeterministicSeed seed = getSeed(cryptoBip39);
+                    return new Result(seed);
                 } else {
                     log.error("Unsupported UR type " + urRegistryType);
                     return new Result(new URException("UR type " + urRegistryType + " is not supported"));
@@ -523,6 +547,14 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
 
             return null;
         }
+
+        private DeterministicSeed getSeed(CryptoSeed cryptoSeed) {
+            return new DeterministicSeed(cryptoSeed.getSeed(), null, cryptoSeed.getBirthdate().getTime());
+        }
+
+        private DeterministicSeed getSeed(CryptoBip39 cryptoBip39) {
+            return new DeterministicSeed(cryptoBip39.getWords(), null, System.currentTimeMillis(), DeterministicSeed.Type.BIP39);
+        }
     }
 
     private class QRScanListener implements WebcamListener {
@@ -626,6 +658,7 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
         public final ExtendedKey extendedKey;
         public final OutputDescriptor outputDescriptor;
         public final List<Wallet> wallets;
+        public final DeterministicSeed seed;
         public final String payload;
         public final Throwable exception;
 
@@ -636,6 +669,7 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
             this.extendedKey = null;
             this.outputDescriptor = null;
             this.wallets = null;
+            this.seed = null;
             this.payload = null;
             this.exception = null;
         }
@@ -647,6 +681,7 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
             this.extendedKey = null;
             this.outputDescriptor = null;
             this.wallets = null;
+            this.seed = null;
             this.payload = null;
             this.exception = null;
         }
@@ -658,6 +693,7 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
             this.extendedKey = null;
             this.outputDescriptor = null;
             this.wallets = null;
+            this.seed = null;
             this.payload = null;
             this.exception = null;
         }
@@ -669,6 +705,7 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
             this.extendedKey = null;
             this.outputDescriptor = null;
             this.wallets = null;
+            this.seed = null;
             this.payload = null;
             this.exception = null;
         }
@@ -680,6 +717,7 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
             this.extendedKey = extendedKey;
             this.outputDescriptor = null;
             this.wallets = null;
+            this.seed = null;
             this.payload = null;
             this.exception = null;
         }
@@ -691,6 +729,7 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
             this.extendedKey = null;
             this.outputDescriptor = outputDescriptor;
             this.wallets = null;
+            this.seed = null;
             this.payload = null;
             this.exception = null;
         }
@@ -702,6 +741,19 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
             this.extendedKey = null;
             this.outputDescriptor = null;
             this.wallets = wallets;
+            this.seed = null;
+            this.payload = null;
+            this.exception = null;
+        }
+
+        public Result(DeterministicSeed seed) {
+            this.transaction = null;
+            this.psbt = null;
+            this.uri = null;
+            this.extendedKey = null;
+            this.outputDescriptor = null;
+            this.wallets = null;
+            this.seed = seed;
             this.payload = null;
             this.exception = null;
         }
@@ -713,6 +765,7 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
             this.extendedKey = null;
             this.outputDescriptor = null;
             this.wallets = null;
+            this.seed = null;
             this.payload = payload;
             this.exception = null;
         }
@@ -724,6 +777,7 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
             this.extendedKey = null;
             this.outputDescriptor = null;
             this.wallets = null;
+            this.seed = null;
             this.payload = null;
             this.exception = exception;
         }

src/main/java/com/sparrowwallet/sparrow/event/ViewTransactionEvent.java

@@ -1,5 +1,6 @@
 package com.sparrowwallet.sparrow.event;
 
+import com.sparrowwallet.drongo.protocol.Transaction;
 import com.sparrowwallet.drongo.wallet.BlockTransaction;
 import com.sparrowwallet.sparrow.transaction.TransactionView;
 import com.sparrowwallet.sparrow.wallet.HashIndexEntry;
@@ -7,10 +8,19 @@ import javafx.stage.Window;
 
 public class ViewTransactionEvent {
     private final Window window;
+    private final Transaction transaction;
     private final BlockTransaction blockTransaction;
     private final TransactionView initialView;
     private final Integer initialIndex;
 
+    public ViewTransactionEvent(Window window, Transaction transaction) {
+        this.window = window;
+        this.transaction = transaction;
+        this.blockTransaction = null;
+        this.initialView = TransactionView.HEADERS;
+        this.initialIndex = null;
+    }
+
     public ViewTransactionEvent(Window window, BlockTransaction blockTransaction) {
         this(window, blockTransaction, TransactionView.HEADERS, null);
     }
@@ -21,6 +31,7 @@ public class ViewTransactionEvent {
 
     public ViewTransactionEvent(Window window, BlockTransaction blockTransaction, TransactionView initialView, Integer initialIndex) {
         this.window = window;
+        this.transaction = blockTransaction.getTransaction();
         this.blockTransaction = blockTransaction;
         this.initialView = initialView;
         this.initialIndex = initialIndex;
@@ -30,6 +41,10 @@ public class ViewTransactionEvent {
         return window;
     }
 
+    public Transaction getTransaction() {
+        return transaction;
+    }
+
     public BlockTransaction getBlockTransaction() {
         return blockTransaction;
     }

src/main/java/com/sparrowwallet/sparrow/transaction/HeadersController.java

@@ -60,6 +60,9 @@ import java.time.*;
 import java.time.format.DateTimeFormatter;
 import java.util.*;
 import java.util.stream.Collectors;
+import java.util.stream.IntStream;
+
+import static com.sparrowwallet.sparrow.AppServices.showErrorDialog;
 
 public class HeadersController extends TransactionFormController implements Initializable, DynamicUpdate {
     private static final Logger log = LoggerFactory.getLogger(HeadersController.class);
@@ -829,7 +832,49 @@ public class HeadersController extends TransactionFormController implements Init
         ToggleButton toggleButton = (ToggleButton)event.getSource();
         toggleButton.setSelected(false);
 
-        EventManager.get().post(new RequestQRScanEvent(toggleButton.getScene().getWindow()));
+        QRScanDialog qrScanDialog = new QRScanDialog();
+        Optional<QRScanDialog.Result> optionalResult = qrScanDialog.showAndWait();
+        if(optionalResult.isPresent()) {
+            QRScanDialog.Result result = optionalResult.get();
+            if(result.transaction != null) {
+                EventManager.get().post(new ViewTransactionEvent(toggleButton.getScene().getWindow(), result.transaction));
+            } else if(result.psbt != null) {
+                EventManager.get().post(new ViewPSBTEvent(toggleButton.getScene().getWindow(), null, null, result.psbt));
+            } else if(result.seed != null) {
+                signFromSeed(result.seed);
+            } else if(result.exception != null) {
+                log.error("Error scanning QR", result.exception);
+                showErrorDialog("Error scanning QR", result.exception.getMessage());
+            } else {
+                AppServices.showErrorDialog("Invalid QR Code", "Cannot parse QR code into a transaction or seed.");
+            }
+        }
+    }
+
+    private void signFromSeed(DeterministicSeed seed) {
+        try {
+            String masterFingerprint = Keystore.fromSeed(seed, ScriptType.P2PKH.getDefaultDerivation()).getKeyDerivation().getMasterFingerprint();
+            Wallet walletCopy = headersForm.getSigningWallet().copy();
+            OptionalInt optIndex = IntStream.range(0, walletCopy.getKeystores().size())
+                    .filter(i -> walletCopy.getKeystores().get(i).getKeyDerivation().getMasterFingerprint().equals(masterFingerprint)).findFirst();
+            if(optIndex.isPresent()) {
+                walletCopy.getKeystores().forEach(keystore -> {
+                    keystore.setSeed(null);
+                    keystore.setMasterPrivateExtendedKey(null);
+                });
+                Keystore original = walletCopy.getKeystores().get(optIndex.getAsInt());
+                Keystore replacement = Keystore.fromSeed(seed, original.getKeyDerivation().getDerivation());
+                walletCopy.getKeystores().set(optIndex.getAsInt(), replacement);
+                signUnencryptedKeystores(walletCopy);
+            } else {
+                AppServices.showErrorDialog("Invalid seed", "The QR code contains a seed that does not match any of the keystores in the signing wallet.");
+            }
+        } catch(MnemonicException e) {
+            log.error("Invalid seed", e);
+            AppServices.showErrorDialog("Invalid seed", e.getMessage());
+        } finally {
+            seed.clear();
+        }
     }
 
     public void savePSBT(ActionEvent event) {

src/main/java/com/sparrowwallet/sparrow/transaction/TransactionController.java

@@ -432,7 +432,7 @@ public class TransactionController implements Initializable {
 
     @Subscribe
     public void viewTransaction(ViewTransactionEvent event) {
-        if(txdata.getTransaction().getTxId().equals(event.getBlockTransaction().getTransaction().getTxId())) {
+        if(txdata.getTransaction().getTxId().equals(event.getTransaction().getTxId())) {
             TreeItem<TransactionForm> existingItem = getTreeItem(event.getInitialView(), event.getInitialIndex());
             if(existingItem != null && !(existingItem.getValue() instanceof PageForm)) {
                 setTreeSelection(event.getInitialView(), event.getInitialIndex());