storage refactor and test

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

@@ -41,9 +41,9 @@ public class MainApp extends Application {
         wallet.setScriptType(ScriptType.P2SH);
 
         KeystoreImportDialog dlg = new KeystoreImportDialog(wallet);
-        dlg.showAndWait();
+        //dlg.showAndWait();
 
-        //stage.show();
+        stage.show();
     }
 
     public static void main(String[] args) {

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

@@ -9,9 +9,7 @@ import com.sparrowwallet.drongo.wallet.Wallet;
 import java.io.*;
 import java.lang.reflect.Type;
 import java.nio.charset.StandardCharsets;
-import java.util.zip.DataFormatException;
-import java.util.zip.Deflater;
-import java.util.zip.Inflater;
+import java.util.zip.*;
 
 public class Storage {
     public static final String SPARROW_DIR = ".sparrow";
@@ -49,31 +47,11 @@ public class Storage {
     }
 
     public Wallet loadWallet(File file, ECKey encryptionKey) throws IOException {
-        BufferedInputStream inputStream = new BufferedInputStream(new FileInputStream(file));
-        byte[] encrypted = ByteStreams.toByteArray(inputStream);
-        byte[] decrypted = encryptionKey.decryptEcies(encrypted, getEncryptionMagic());
-        String jsonWallet = inflate(decrypted);
-
-        return gson.fromJson(jsonWallet, Wallet.class);
-    }
-
-    private static String inflate(byte[] encryptedWallet) {
-        Inflater inflater = new Inflater();
-        inflater.setInput(encryptedWallet);
-
-        ByteArrayOutputStream baos = new ByteArrayOutputStream();
-        try {
-            byte[] buf = new byte[1024];
-            while(!inflater.finished()) {
-                int byteCount = inflater.inflate(buf);
-                baos.write(buf, 0, byteCount);
-            }
-            inflater.end();
-        } catch(DataFormatException e) {
-            throw new RuntimeException(e);
-        }
+        Reader reader = new InputStreamReader(new InflaterInputStream(new ECIESInputStream(new FileInputStream(file), encryptionKey, getEncryptionMagic())), StandardCharsets.UTF_8);
+        Wallet wallet = gson.fromJson(reader, Wallet.class);
+        reader.close();
 
-        return baos.toString(StandardCharsets.UTF_8);
+        return wallet;
     }
 
     public void storeWallet(File file, Wallet wallet) throws IOException {
@@ -93,29 +71,9 @@ public class Storage {
             throw new IOException("Could not create folder " + parent);
         }
 
-        String jsonWallet = gson.toJson(wallet);
-        byte[] compressedWallet = deflate(jsonWallet);
-        byte[] encryptedWallet = encryptionKey.encryptEcies(compressedWallet, getEncryptionMagic());
-
-        BufferedOutputStream outputStream = new BufferedOutputStream(new FileOutputStream(file));
-        outputStream.write(encryptedWallet);
-        outputStream.close();
-    }
-
-    private static byte[] deflate(String jsonWallet) {
-        Deflater deflater = new Deflater(Deflater.BEST_COMPRESSION);
-        deflater.setInput(jsonWallet.getBytes(StandardCharsets.UTF_8));
-        deflater.finish();
-
-        ByteArrayOutputStream baos = new ByteArrayOutputStream();
-        byte[] buf = new byte[1024];
-        while(!deflater.finished()) {
-            int byteCount = deflater.deflate(buf);
-            baos.write(buf, 0, byteCount);
-        }
-        deflater.end();
-
-        return baos.toByteArray();
+        OutputStreamWriter writer = new OutputStreamWriter(new DeflaterOutputStream(new ECIESOutputStream(new FileOutputStream(file), encryptionKey, getEncryptionMagic())), StandardCharsets.UTF_8);
+        gson.toJson(wallet, writer);
+        writer.close();
     }
 
     private static byte[] getEncryptionMagic() {

src/test/java/com/sparrowwallet/sparrow/io/IoTest.java

@@ -1,10 +1,16 @@
 package com.sparrowwallet.sparrow.io;
 
+import java.io.File;
 import java.io.InputStream;
 
 public class IoTest {
+    public static final String IO_TEST_PATH = "/com/sparrowwallet/sparrow/io/";
+
+    protected File getFile(String filename) {
+        return new File(this.getClass().getResource(IO_TEST_PATH + filename).getFile());
+    }
 
     protected InputStream getInputStream(String filename) {
-        return this.getClass().getResourceAsStream("/com/sparrowwallet/sparrow/io/" + filename);
+        return this.getClass().getResourceAsStream(IO_TEST_PATH + filename);
     }
 }

src/test/java/com/sparrowwallet/sparrow/io/StorageTest.java

@@ -0,0 +1,36 @@
+package com.sparrowwallet.sparrow.io;
+
+import com.sparrowwallet.drongo.crypto.ECKey;
+import com.sparrowwallet.drongo.wallet.Wallet;
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.IOException;
+
+public class StorageTest extends IoTest {
+    @Test
+    public void loadWallet() throws IOException {
+        ECKey decryptionKey = ECKey.createKeyPbkdf2HmacSha512("pass");
+        Wallet wallet = Storage.getStorage().loadWallet(getFile("sparrow-single-wallet"), decryptionKey);
+        Assert.assertTrue(wallet.isValid());
+    }
+
+    @Test
+    public void saveWallet() throws IOException {
+        ECKey decryptionKey = ECKey.createKeyPbkdf2HmacSha512("pass");
+        Wallet wallet = Storage.getStorage().loadWallet(getFile("sparrow-single-wallet"), decryptionKey);
+        Assert.assertTrue(wallet.isValid());
+
+        ECKey encyptionKey = ECKey.fromPublicOnly(decryptionKey);
+        File tempWallet = File.createTempFile("sparrow", "tmp");
+        tempWallet.deleteOnExit();
+
+        ByteArrayOutputStream dummyFileOutputStream = new ByteArrayOutputStream();
+        Storage.getStorage().storeWallet(tempWallet, encyptionKey, wallet);
+
+        wallet = Storage.getStorage().loadWallet(tempWallet, decryptionKey);
+        Assert.assertTrue(wallet.isValid());
+    }
+}

src/test/resources/com/sparrowwallet/sparrow/io/sparrow-single-wallet

@@ -0,0 +1 @@
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