add wallet import for samourai backup export

drongo

@@ -1 +1 @@
-Subproject commit 3f4ee7af747b80976cda8ebd3c687b6a4ba5ea3f
+Subproject commit 7584bcf26001d3705bb9467349112bc701905e7f

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

@@ -38,6 +38,7 @@ public class FileWalletKeystoreImportPane extends FileImportPane {
     private final KeystoreFileImport importer;
     private String fileName;
     private byte[] fileBytes;
+    private String password;
 
     public FileWalletKeystoreImportPane(KeystoreFileImport importer) {
         super(importer, importer.getName(), "Wallet import", importer.getKeystoreImportDescription(), "image/" + importer.getWalletModel().getType() + ".png", importer.isKeystoreImportScannable(), importer.isFileFormatAvailable());
@@ -46,6 +47,7 @@ public class FileWalletKeystoreImportPane extends FileImportPane {
 
     protected void importFile(String fileName, InputStream inputStream, String password) throws ImportException {
         this.fileName = fileName;
+        this.password = password;
 
         List<ScriptType> scriptTypes = ScriptType.getAddressableScriptTypes(PolicyType.SINGLE);
         if(wallets != null && !wallets.isEmpty()) {
@@ -83,7 +85,7 @@ public class FileWalletKeystoreImportPane extends FileImportPane {
             EventManager.get().post(new WalletImportEvent(wallet));
         } else {
             ByteArrayInputStream bais = new ByteArrayInputStream(fileBytes);
-            Keystore keystore = importer.getKeystore(scriptType, bais, "");
+            Keystore keystore = importer.getKeystore(scriptType, bais, password);
 
             Wallet wallet = new Wallet();
             wallet.setName(Files.getNameWithoutExtension(fileName));

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

@@ -51,7 +51,8 @@ public class WalletImportDialog extends Dialog<Wallet> {
         AnchorPane.setRightAnchor(scrollPane, 0.0);
 
         importAccordion = new Accordion();
-        List<KeystoreFileImport> keystoreImporters = List.of(new ColdcardSinglesig(), new CoboVaultSinglesig(), new Jade(), new KeystoneSinglesig(), new PassportSinglesig(), new GordianSeedTool(), new SeedSigner(), new SpecterDIY(), new Krux(), new AirGapVault());
+        List<KeystoreFileImport> keystoreImporters = List.of(new ColdcardSinglesig(), new CoboVaultSinglesig(), new Jade(), new KeystoneSinglesig(), new PassportSinglesig(),
+                new GordianSeedTool(), new SeedSigner(), new SpecterDIY(), new Krux(), new AirGapVault(), new Samourai());
         for(KeystoreFileImport importer : keystoreImporters) {
             if(!importer.isDeprecated() || Config.get().isShowDeprecatedImportExport()) {
                 FileWalletKeystoreImportPane importPane = new FileWalletKeystoreImportPane(importer);
@@ -59,7 +60,8 @@ public class WalletImportDialog extends Dialog<Wallet> {
             }
         }
 
-        List<WalletImport> walletImporters = new ArrayList<>(List.of(new Bip129(), new CaravanMultisig(), new ColdcardMultisig(), new CoboVaultMultisig(), new Electrum(), new KeystoneMultisig(), new Descriptor(), new SpecterDesktop(), new BlueWalletMultisig(), new Sparrow(), new JadeMultisig()));
+        List<WalletImport> walletImporters = new ArrayList<>(List.of(new Bip129(), new CaravanMultisig(), new ColdcardMultisig(), new CoboVaultMultisig(), new Electrum(),
+                new KeystoneMultisig(), new Descriptor(), new SpecterDesktop(), new BlueWalletMultisig(), new Sparrow(), new JadeMultisig()));
         if(!selectedWalletForms.isEmpty()) {
             walletImporters.add(new WalletLabels(selectedWalletForms));
         }

src/main/java/com/sparrowwallet/sparrow/io/Samourai.java

@@ -0,0 +1,97 @@
+package com.sparrowwallet.sparrow.io;
+
+import com.google.common.io.CharStreams;
+import com.google.gson.Gson;
+import com.google.gson.JsonElement;
+import com.google.gson.reflect.TypeToken;
+import com.samourai.wallet.crypto.AESUtil;
+import com.samourai.wallet.util.CharSequenceX;
+import com.sparrowwallet.drongo.Utils;
+import com.sparrowwallet.drongo.protocol.ScriptType;
+import com.sparrowwallet.drongo.wallet.*;
+
+import java.io.File;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.lang.reflect.Type;
+import java.nio.charset.StandardCharsets;
+import java.util.Map;
+
+@SuppressWarnings("deprecation")
+public class Samourai implements KeystoreFileImport {
+    @Override
+    public String getKeystoreImportDescription(int account) {
+        return "Import the wallet backup file samourai.txt exported from the Samourai app.";
+    }
+
+    @Override
+    public Keystore getKeystore(ScriptType scriptType, InputStream inputStream, String password) throws ImportException {
+        try {
+            String input = CharStreams.toString(new InputStreamReader(inputStream, StandardCharsets.UTF_8));
+
+            Gson gson = new Gson();
+            Type stringStringMap = new TypeToken<Map<String, JsonElement>>() {
+            }.getType();
+            Map<String, JsonElement> map = gson.fromJson(input, stringStringMap);
+
+            String payload = input;
+            if(map.containsKey("payload")) {
+                payload = map.get("payload").getAsString();
+            }
+
+            int version = 1;
+            if(map.containsKey("version")) {
+                version = map.get("version").getAsInt();
+            }
+
+            String decrypted;
+            if(version == 1) {
+                decrypted = AESUtil.decrypt(payload, new CharSequenceX(password), AESUtil.DefaultPBKDF2Iterations);
+            } else if(version == 2) {
+                decrypted = AESUtil.decryptSHA256(payload, new CharSequenceX(password));
+            } else {
+                throw new ImportException("Unsupported backup version: " + version);
+            }
+
+            SamouraiBackup backup = gson.fromJson(decrypted, SamouraiBackup.class);
+            DeterministicSeed seed = new DeterministicSeed(Utils.hexToBytes(backup.wallet.seed), password, 0);
+            Keystore keystore = Keystore.fromSeed(seed, scriptType.getDefaultDerivation());
+            keystore.setLabel(getWalletModel().toDisplayString());
+            return keystore;
+        } catch(ImportException e) {
+            throw e;
+        } catch(Exception e) {
+            throw new ImportException("Error importing backup", e);
+        }
+    }
+
+    @Override
+    public boolean isKeystoreImportScannable() {
+        return false;
+    }
+
+    @Override
+    public boolean isEncrypted(File file) {
+        return true;
+    }
+
+    @Override
+    public String getName() {
+        return "Samourai Backup";
+    }
+
+    @Override
+    public WalletModel getWalletModel() {
+        return WalletModel.SAMOURAI;
+    }
+
+    private static class SamouraiBackup {
+        public SamouraiWallet wallet;
+    }
+
+    private static class SamouraiWallet {
+        public boolean testnet;
+        public String seed;
+        public String fingerprint;
+    }
+}