new version for fixed malloc (83dcd65)

* new version id & name
* witness checksums
* build docs updated for v0.12
* remove binaries
* setenv HOME for ringdb to 'monero' in shared storage
* min ringsize 7
* remove boost_locale and zmq from build - don't need them for wallet_api
* splits for all archs
* throw IndexOutOfBounds in case the TX is empty
* donate, you ungrateful bastards! (removed donations to make google happy)

.circleci/config.yml

@@ -0,0 +1,27 @@
+version: 2
+jobs:
+  build:
+    working_directory: ~/code
+    docker:
+      - image: bitriseio/android-ndk
+    environment:
+      JVM_OPTS: -Xmx3200m
+    steps:
+      - checkout
+      - restore_cache:
+          key: jars-{{ checksum "build.gradle" }}-{{ checksum  "app/build.gradle" }}
+      - run:
+          name: Download Dependencies
+          command: ./gradlew androidDependencies
+      - save_cache:
+          paths:
+            - ~/.gradle
+          key: jars-{{ checksum "build.gradle" }}-{{ checksum  "app/build.gradle" }}
+      - run:
+          name: Run Tests
+          command: ./gradlew test
+      - store_artifacts:
+          path: app/build/reports
+          destination: reports
+      - store_test_results:
+          path: app/build/test-results

app/CMakeLists.txt

@@ -60,9 +60,13 @@ set_target_properties(boost_wserialization PROPERTIES IMPORTED_LOCATION
     ${EXTERNAL_LIBS_DIR}/boost/lib/${ANDROID_ABI}/libboost_wserialization.a)
 
 #############
-# Monero set(libs_to_merge wallet cryptonote_core cryptonote_basic mnemonics common cncrypto ringct)
+# Monero
 #############
 
+add_library(wallet_api STATIC IMPORTED)
+set_target_properties(wallet_api PROPERTIES IMPORTED_LOCATION
+    ${EXTERNAL_LIBS_DIR}/monero/lib/${ANDROID_ABI}/libwallet_api.a)
+
 add_library(wallet STATIC IMPORTED)
 set_target_properties(wallet PROPERTIES IMPORTED_LOCATION
     ${EXTERNAL_LIBS_DIR}/monero/lib/${ANDROID_ABI}/libwallet.a)
@@ -91,11 +95,9 @@ add_library(ringct STATIC IMPORTED)
 set_target_properties(ringct PROPERTIES IMPORTED_LOCATION
     ${EXTERNAL_LIBS_DIR}/monero/lib/${ANDROID_ABI}/libringct.a)
 
-#####
+add_library(ringct_basic STATIC IMPORTED)
-
+set_target_properties(ringct_basic PROPERTIES IMPORTED_LOCATION
-add_library(p2p STATIC IMPORTED)
+    ${EXTERNAL_LIBS_DIR}/monero/lib/${ANDROID_ABI}/libringct_basic.a)
-set_target_properties(p2p PROPERTIES IMPORTED_LOCATION
-    ${EXTERNAL_LIBS_DIR}/monero/lib/${ANDROID_ABI}/libp2p.a)
 
 add_library(blockchain_db STATIC IMPORTED)
 set_target_properties(blockchain_db PROPERTIES IMPORTED_LOCATION
@@ -113,7 +115,6 @@ add_library(unbound STATIC IMPORTED)
 set_target_properties(unbound PROPERTIES IMPORTED_LOCATION
     ${EXTERNAL_LIBS_DIR}/monero/lib/${ANDROID_ABI}/libunbound.a)
 
-####
 add_library(epee STATIC IMPORTED)
 set_target_properties(epee PROPERTIES IMPORTED_LOCATION
     ${EXTERNAL_LIBS_DIR}/monero/lib/${ANDROID_ABI}/libepee.a)
@@ -122,9 +123,21 @@ add_library(blocks STATIC IMPORTED)
 set_target_properties(blocks PROPERTIES IMPORTED_LOCATION
     ${EXTERNAL_LIBS_DIR}/monero/lib/${ANDROID_ABI}/libblocks.a)
 
-add_library(miniupnpc STATIC IMPORTED)
+add_library(checkpoints STATIC IMPORTED)
-set_target_properties(miniupnpc PROPERTIES IMPORTED_LOCATION
+set_target_properties(checkpoints PROPERTIES IMPORTED_LOCATION
-    ${EXTERNAL_LIBS_DIR}/monero/lib/${ANDROID_ABI}/libminiupnpc.a)
+    ${EXTERNAL_LIBS_DIR}/monero/lib/${ANDROID_ABI}/libcheckpoints.a)
+
+add_library(device STATIC IMPORTED)
+set_target_properties(device PROPERTIES IMPORTED_LOCATION
+    ${EXTERNAL_LIBS_DIR}/monero/lib/${ANDROID_ABI}/libdevice.a)
+
+add_library(multisig STATIC IMPORTED)
+set_target_properties(multisig PROPERTIES IMPORTED_LOCATION
+    ${EXTERNAL_LIBS_DIR}/monero/lib/${ANDROID_ABI}/libmultisig.a)
+
+add_library(version STATIC IMPORTED)
+set_target_properties(version PROPERTIES IMPORTED_LOCATION
+    ${EXTERNAL_LIBS_DIR}/monero/lib/${ANDROID_ABI}/libversion.a)
 
 #############
 # System
@@ -137,23 +150,26 @@ include_directories( ${EXTERNAL_LIBS_DIR}/monero/include )
 message(STATUS EXTERNAL_LIBS_DIR :  ${EXTERNAL_LIBS_DIR})
 
 target_link_libraries(  monerujo
+
+                        wallet_api
                         wallet
                         cryptonote_core
                         cryptonote_basic
                         mnemonics
                         ringct
+                        ringct_basic
                         common
                         cncrypto
-
                         blockchain_db
                         lmdb
                         easylogging
                         unbound
-                        p2p
-
                         epee
                         blocks
-                        miniupnpc
+                        checkpoints
+                        device
+                        multisig
+                        version
 
                         boost_chrono
                         boost_date_time

app/build.gradle

@@ -8,8 +8,8 @@ android {
         applicationId "com.m2049r.xmrwallet"
         minSdkVersion 21
         targetSdkVersion 25
-        versionCode 65
+        versionCode 86
-        versionName "1.3.5 'Satoshis Dream'"
+        versionName "1.4.6 'Monero Spedner'"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
         externalNativeBuild {
             cmake {
@@ -18,7 +18,7 @@ android {
             }
         }
         ndk {
-            abiFilters 'armeabi-v7a'
+            abiFilters 'armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64'
         }
     }
 
@@ -27,12 +27,37 @@ android {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
+        debug {
+            applicationIdSuffix ".debug"
+        }
     }
     externalNativeBuild {
         cmake {
             path "CMakeLists.txt"
         }
     }
+
+    splits {
+        abi {
+            enable true
+            reset()
+            include 'armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64'
+            universalApk true
+        }
+    }
+
+    // Map for the version code that gives each ABI a value.
+    def abiCodes = ['armeabi-v7a': 1, 'arm64-v8a': 2, 'x86': 3, 'x86_64': 4]
+
+    // APKs for the same app that all have the same version information.
+    android.applicationVariants.all { variant ->
+        // Assigns a different version code for each output APK.
+        variant.outputs.each {
+            output ->
+                def abiName = output.getFilter(com.android.build.OutputFile.ABI)
+                output.versionCodeOverride = abiCodes.get(abiName, 0) + 10 * variant.versionCode
+        }
+    }
 }
 
 dependencies {
@@ -47,6 +72,8 @@ dependencies {
     compile "com.squareup.okhttp3:okhttp:$rootProject.ext.okHttpVersion"
     compile "com.jakewharton.timber:timber:$rootProject.ext.timberVersion"
 
+    compile 'com.nulab-inc:zxcvbn:1.2.3'
+
     testCompile "junit:junit:$rootProject.ext.junitVersion"
     testCompile "org.mockito:mockito-all:$rootProject.ext.mockitoVersion"
     testCompile "com.squareup.okhttp3:mockwebserver:$rootProject.ext.okHttpVersion"
@@ -77,5 +104,7 @@ dependencyVerification {
             'com.google.zxing:core:bba7724e02a997cec38213af77133ee8e24b0d5cf5fa7ecbc16a4fa93f11ee0d',
             'com.squareup.okio:okio:734269c3ebc5090e3b23566db558f421f0b4027277c79ad5d176b8ec168bb850',
             'com.squareup.okhttp3:okhttp:7265adbd6f028aade307f58569d814835cd02bc9beffb70c25f72c9de50d61c4',
+            'com.jakewharton.timber:timber:35c22867f2673132e97e17857d36bb2fc25f5790f0425406833ed0254d62fc66',
+            'com.nulab-inc:zxcvbn:18d7862a6abd2705defec478d77dedadf8f3bb7cf811df22995494f05485785f',
     ]
 }

app/src/debug/res/values/strings.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name" translatable="false">monerujo - Debug</string>
+</resources>

app/src/main/java/com/m2049r/xmrwallet/GenerateFragment.java

@@ -21,7 +21,9 @@ import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.support.design.widget.TextInputLayout;
 import android.support.v4.app.Fragment;
+import android.text.Editable;
 import android.text.InputType;
+import android.text.TextWatcher;
 import android.view.KeyEvent;
 import android.view.LayoutInflater;
 import android.view.Menu;
@@ -32,12 +34,18 @@ import android.view.inputmethod.EditorInfo;
 import android.widget.Button;
 import android.widget.TextView;
 
+import com.m2049r.xmrwallet.util.RestoreHeight;
 import com.m2049r.xmrwallet.widget.Toolbar;
 import com.m2049r.xmrwallet.model.Wallet;
 import com.m2049r.xmrwallet.model.WalletManager;
 import com.m2049r.xmrwallet.util.Helper;
+import com.nulabinc.zxcvbn.Strength;
+import com.nulabinc.zxcvbn.Zxcvbn;
 
 import java.io.File;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Calendar;
 
 import timber.log.Timber;
 
@@ -125,7 +133,7 @@ public class GenerateFragment extends Fragment {
         });
 
         Helper.showKeyboard(getActivity());
-//##############
+
         etWalletName.getEditText().setOnEditorActionListener(new TextView.OnEditorActionListener() {
             public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
                 if ((event != null && (event.getKeyCode() == KeyEvent.KEYCODE_ENTER)) || (actionId == EditorInfo.IME_ACTION_NEXT)) {
@@ -231,9 +239,7 @@ public class GenerateFragment extends Fragment {
         }
         if (!type.equals(TYPE_NEW)) {
             etWalletRestoreHeight.setVisibility(View.VISIBLE);
-            etWalletRestoreHeight.getEditText().setOnEditorActionListener(new TextView.OnEditorActionListener()
+            etWalletRestoreHeight.getEditText().setOnEditorActionListener(new TextView.OnEditorActionListener() {
-
-            {
                 public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
                     if ((event != null && (event.getKeyCode() == KeyEvent.KEYCODE_ENTER)) || (actionId == EditorInfo.IME_ACTION_DONE)) {
                         Helper.hideKeyboard(getActivity());
@@ -254,11 +260,61 @@ public class GenerateFragment extends Fragment {
             }
         });
 
+        etWalletPassword.getEditText().addTextChangedListener(new TextWatcher() {
+            @Override
+            public void afterTextChanged(Editable editable) {
+                checkPassword();
+            }
+
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+            }
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {
+            }
+        });
+
         etWalletName.requestFocus();
+        initZxcvbn();
 
         return view;
     }
 
+    Zxcvbn zxcvbn = new Zxcvbn();
+
+    // initialize zxcvbn engine in background thread
+    private void initZxcvbn() {
+        new Thread(new Runnable() {
+            @Override
+            public void run() {
+                zxcvbn.measure("");
+            }
+        }).start();
+    }
+
+    private void checkPassword() {
+        String password = etWalletPassword.getEditText().getText().toString();
+        if (!password.isEmpty()) {
+            Strength strength = zxcvbn.measure(password);
+            int msg;
+            double guessesLog10 = strength.getGuessesLog10();
+            if (guessesLog10 < 10)
+                msg = R.string.password_weak;
+            else if (guessesLog10 < 11)
+                msg = R.string.password_fair;
+            else if (guessesLog10 < 12)
+                msg = R.string.password_good;
+            else if (guessesLog10 < 13)
+                msg = R.string.password_strong;
+            else
+                msg = R.string.password_very_strong;
+            etWalletPassword.setError(getResources().getString(msg));
+        } else {
+            etWalletPassword.setError(null);
+        }
+    }
+
     private boolean checkName() {
         String name = etWalletName.getEditText().getText().toString();
         boolean ok = true;
@@ -281,6 +337,42 @@ public class GenerateFragment extends Fragment {
         return ok;
     }
 
+    private boolean checkHeight() {
+        long height = !type.equals(TYPE_NEW) ? getHeight() : 0;
+        boolean ok = true;
+        if (height < 0) {
+            etWalletRestoreHeight.setError(getString(R.string.generate_restoreheight_error));
+            ok = false;
+        }
+        if (ok) {
+            etWalletRestoreHeight.setError(null);
+        }
+        return ok;
+    }
+
+    private long getHeight() {
+        long height = 0;
+
+        String restoreHeight = etWalletRestoreHeight.getEditText().getText().toString().trim();
+        if (restoreHeight.isEmpty()) return -1;
+        try {
+            // is it a date?
+            SimpleDateFormat parser = new SimpleDateFormat("yyyy-MM-dd");
+            parser.setLenient(false);
+            parser.parse(restoreHeight);
+            height = RestoreHeight.getInstance().getHeight(restoreHeight);
+        } catch (ParseException exPE) {
+            try {
+                // or is it a height?
+                height = Long.parseLong(restoreHeight);
+            } catch (NumberFormatException exNFE) {
+                return -1;
+            }
+        }
+        Timber.d("Using Restore Height = %d", height);
+        return height;
+    }
+
     private boolean checkMnemonic() {
         String seed = etWalletMnemonic.getEditText().getText().toString();
         boolean ok = (seed.split("\\s").length == 25); // 25 words
@@ -294,7 +386,7 @@ public class GenerateFragment extends Fragment {
 
     private boolean checkAddress() {
         String address = etWalletAddress.getEditText().getText().toString();
-        boolean ok = Wallet.isAddressValid(address, WalletManager.getInstance().isTestNet());
+        boolean ok = Wallet.isAddressValid(address);
         if (!ok) {
             etWalletAddress.setError(getString(R.string.generate_check_address));
         } else {
@@ -327,15 +419,13 @@ public class GenerateFragment extends Fragment {
 
     private void generateWallet() {
         if (!checkName()) return;
+        if (!checkHeight()) return;
+
         String name = etWalletName.getEditText().getText().toString();
         String password = etWalletPassword.getEditText().getText().toString();
 
-        long height;
+        long height = getHeight();
-        try {
+        if (height < 0) height = 0;
-            height = Long.parseLong(etWalletRestoreHeight.getEditText().getText().toString());
-        } catch (NumberFormatException ex) {
-            height = 0; // Keep calm and carry on!
-        }
 
         if (type.equals(TYPE_NEW)) {
             bGenerate.setEnabled(false);

app/src/main/java/com/m2049r/xmrwallet/GenerateReviewFragment.java

@@ -34,6 +34,7 @@ import android.widget.ScrollView;
 import android.widget.TextView;
 import android.widget.Toast;
 
+import com.m2049r.xmrwallet.model.NetworkType;
 import com.m2049r.xmrwallet.widget.Toolbar;
 import com.m2049r.xmrwallet.model.Wallet;
 import com.m2049r.xmrwallet.model.WalletManager;
@@ -81,7 +82,7 @@ public class GenerateReviewFragment extends Fragment {
 
         bAccept = (Button) view.findViewById(R.id.bAccept);
 
-        boolean testnet = WalletManager.getInstance().isTestNet();
+        boolean testnet = WalletManager.getInstance().getNetworkType() != NetworkType.NetworkType_Mainnet;
         tvWalletMnemonic.setTextIsSelectable(testnet);
         tvWalletSpendKey.setTextIsSelectable(testnet);
 
@@ -185,6 +186,7 @@ public class GenerateReviewFragment extends Fragment {
             name = wallet.getName();
             status = wallet.getStatus();
             if (status != Wallet.Status.Status_Ok) {
+                Timber.e(wallet.getErrorString());
                 if (closeWallet) wallet.close();
                 return false;
             }

app/src/main/java/com/m2049r/xmrwallet/ReceiveFragment.java

@@ -300,7 +300,7 @@ public class ReceiveFragment extends Fragment {
         String paymentId = etPaymentId.getEditText().getText().toString();
         String xmrAmount = evAmount.getAmount();
         Timber.d("%s/%s/%s", xmrAmount, paymentId, address);
-        if ((xmrAmount == null) || !Wallet.isAddressValid(address, WalletManager.getInstance().isTestNet())) {
+        if ((xmrAmount == null) || !Wallet.isAddressValid(address)) {
             clearQR();
             Timber.d("CLEARQR");
             return;

app/src/main/java/com/m2049r/xmrwallet/WalletActivity.java

@@ -22,6 +22,7 @@ import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.ServiceConnection;
+import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
 import android.os.Bundle;
 import android.os.IBinder;
@@ -35,7 +36,7 @@ import android.widget.Toast;
 
 import com.m2049r.xmrwallet.data.BarcodeData;
 import com.m2049r.xmrwallet.data.TxData;
-import com.m2049r.xmrwallet.dialog.DonationFragment;
+import com.m2049r.xmrwallet.dialog.CreditsFragment;
 import com.m2049r.xmrwallet.dialog.HelpFragment;
 import com.m2049r.xmrwallet.fragment.send.SendAddressWizardFragment;
 import com.m2049r.xmrwallet.fragment.send.SendFragment;
@@ -140,6 +141,9 @@ public class WalletActivity extends SecureActivity implements WalletFragment.Lis
     @Override
     protected void onDestroy() {
         Timber.d("onDestroy()");
+        if ((mBoundService != null) && !isSynced() && (getWallet() != null)) {
+            saveWallet();
+        }
         stopWalletService();
         super.onDestroy();
     }
@@ -155,8 +159,8 @@ public class WalletActivity extends SecureActivity implements WalletFragment.Lis
             case R.id.action_info:
                 onWalletDetails();
                 return true;
-            case R.id.action_donate:
+            case R.id.action_credits:
-                DonationFragment.display(getSupportFragmentManager());
+                CreditsFragment.display(getSupportFragmentManager());
                 return true;
             case R.id.action_share:
                 onShareTxInfo();
@@ -209,8 +213,8 @@ public class WalletActivity extends SecureActivity implements WalletFragment.Lis
                     case Toolbar.BUTTON_CLOSE:
                         finish();
                         break;
-                    case Toolbar.BUTTON_DONATE:
+                    case Toolbar.BUTTON_CREDITS:
-                        Toast.makeText(WalletActivity.this, getString(R.string.label_donate), Toast.LENGTH_SHORT).show();
+                        Toast.makeText(WalletActivity.this, getString(R.string.label_credits), Toast.LENGTH_SHORT).show();
                     case Toolbar.BUTTON_NONE:
                     default:
                         Timber.e("Button " + type + "pressed - how can this be?");
@@ -218,12 +222,7 @@ public class WalletActivity extends SecureActivity implements WalletFragment.Lis
             }
         });
 
-        boolean testnet = WalletManager.getInstance().isTestNet();
+        showNet();
-        if (testnet) {
-            toolbar.setBackgroundResource(R.color.colorPrimaryDark);
-        } else {
-            toolbar.setBackgroundResource(R.drawable.backgound_toolbar_mainnet);
-        }
 
         Fragment walletFragment = new WalletFragment();
         getSupportFragmentManager().beginTransaction()
@@ -234,6 +233,23 @@ public class WalletActivity extends SecureActivity implements WalletFragment.Lis
         Timber.d("onCreate() done.");
     }
 
+    public void showNet() {
+        switch (WalletManager.getInstance().getNetworkType()) {
+            case NetworkType_Mainnet:
+                toolbar.setBackgroundResource(R.drawable.backgound_toolbar_mainnet);
+                break;
+            case NetworkType_Testnet:
+                toolbar.setBackgroundResource(R.color.colorPrimaryDark);
+                break;
+            case NetworkType_Stagenet:
+                toolbar.setBackgroundResource(R.color.colorPrimaryDark);
+                break;
+            default:
+                throw new IllegalStateException("Unsupported Network: " + WalletManager.getInstance().getNetworkType());
+        }
+    }
+
+
     public Wallet getWallet() {
         if (mBoundService == null) throw new IllegalStateException("WalletService not bound.");
         return mBoundService.getWallet();
@@ -794,7 +810,7 @@ public class WalletActivity extends SecureActivity implements WalletFragment.Lis
 
     @Override
     public boolean verifyWalletPassword(String password) {
-        String walletPath = new File(Helper.getStorageRoot(this),
+        String walletPath = new File(Helper.getWalletRoot(this),
                 getWalletName() + ".keys").getAbsolutePath();
         return WalletManager.getInstance().verifyWalletPassword(walletPath, password, true);
     }
@@ -807,9 +823,6 @@ public class WalletActivity extends SecureActivity implements WalletFragment.Lis
                 super.onBackPressed();
             }
         } else {
-            if (!isSynced()) {
-                saveWallet();
-            }
             super.onBackPressed();
         }
     }
@@ -818,4 +831,10 @@ public class WalletActivity extends SecureActivity implements WalletFragment.Lis
     public void onFragmentDone() {
         popFragmentStack(null);
     }
+
+    @Override
+    public SharedPreferences getPrefs() {
+        return getPreferences(Context.MODE_PRIVATE);
+    }
+
 }

app/src/main/java/com/m2049r/xmrwallet/XmrWalletApplication.java

@@ -19,13 +19,15 @@ package com.m2049r.xmrwallet;
 
 import android.app.Application;
 
+import com.m2049r.xmrwallet.util.Helper;
+
 import timber.log.Timber;
 
 public class XmrWalletApplication extends Application {
     @Override
     public void onCreate() {
         super.onCreate();
-
+        
         if (BuildConfig.DEBUG) {
             Timber.plant(new Timber.DebugTree());
         }

app/src/main/java/com/m2049r/xmrwallet/data/BarcodeData.java

@@ -18,6 +18,7 @@ package com.m2049r.xmrwallet.data;
 
 import android.net.Uri;
 
+import com.m2049r.xmrwallet.model.NetworkType;
 import com.m2049r.xmrwallet.model.Wallet;
 import com.m2049r.xmrwallet.model.WalletManager;
 import com.m2049r.xmrwallet.util.BitcoinAddressValidator;
@@ -178,7 +179,7 @@ public class BarcodeData {
                 return null; // we have an amount but its not a number!
             }
         }
-        if (!BitcoinAddressValidator.validate(address, WalletManager.getInstance().isTestNet())) {
+        if (!BitcoinAddressValidator.validate(address)) {
             Timber.d("address invalid");
             return null;
         }
@@ -190,7 +191,7 @@ public class BarcodeData {
 
         if (address == null) return null;
 
-        if (!BitcoinAddressValidator.validate(address, WalletManager.getInstance().isTestNet())) {
+        if (!BitcoinAddressValidator.validate(address)) {
             Timber.d("address invalid");
             return null;
         }

app/src/main/java/com/m2049r/xmrwallet/data/WalletNode.java

@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2018 m2049r
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.m2049r.xmrwallet.data;
+
+import com.m2049r.xmrwallet.model.NetworkType;
+
+import java.net.InetSocketAddress;
+import java.net.SocketAddress;
+
+public class WalletNode {
+    private final String name;
+    private final String host;
+    private final int port;
+    private final String user;
+    private final String password;
+    private final NetworkType networkType;
+
+    public WalletNode(String walletName, String daemon, NetworkType networkType) {
+        if ((daemon == null) || daemon.isEmpty())
+            throw new IllegalArgumentException("daemon is empty");
+        this.name = walletName;
+        String daemonAddress;
+        String a[] = daemon.split("@");
+        if (a.length == 1) { // no credentials
+            daemonAddress = a[0];
+            user = "";
+            password = "";
+        } else if (a.length == 2) { // credentials
+            String userPassword[] = a[0].split(":");
+            if (userPassword.length != 2)
+                throw new IllegalArgumentException("User:Password invalid");
+            user = userPassword[0];
+            if (!user.isEmpty()) {
+                password = userPassword[1];
+            } else {
+                password = "";
+            }
+            daemonAddress = a[1];
+        } else {
+            throw new IllegalArgumentException("Too many @");
+        }
+
+        String da[] = daemonAddress.split(":");
+        if ((da.length > 2) || (da.length < 1))
+            throw new IllegalArgumentException("Too many ':' or too few");
+        host = da[0];
+        if (da.length == 2) {
+            try {
+                port = Integer.parseInt(da[1]);
+            } catch (NumberFormatException ex) {
+                throw new IllegalArgumentException("Port not numeric");
+            }
+        } else {
+            switch (networkType) {
+                case NetworkType_Mainnet:
+                    port = 18081;
+                    break;
+                case NetworkType_Testnet:
+                    port = 28081;
+                    break;
+                case NetworkType_Stagenet:
+                    port = 38081;
+                    break;
+                default:
+                    port = 0;
+            }
+        }
+        this.networkType = networkType;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getAddress() {
+        return host + ":" + port;
+    }
+
+    public String getUsername() {
+        return user;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public SocketAddress getSocketAddress() {
+        return new InetSocketAddress(host, port);
+    }
+
+    public boolean isValid() {
+        return !host.isEmpty();
+    }
+}

app/src/main/java/com/m2049r/xmrwallet/dialog/CreditsFragment.java

@@ -28,16 +28,14 @@ import android.text.Html;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.widget.TextView;
-import android.widget.Toast;
 
 import com.m2049r.xmrwallet.R;
-import com.m2049r.xmrwallet.util.Helper;
 
-public class DonationFragment extends DialogFragment {
+public class CreditsFragment extends DialogFragment {
     static final String TAG = "DonationFragment";
 
-    public static DonationFragment newInstance() {
+    public static CreditsFragment newInstance() {
-        return new DonationFragment();
+        return new CreditsFragment();
     }
 
     public static void display(FragmentManager fm) {
@@ -47,24 +45,14 @@ public class DonationFragment extends DialogFragment {
             ft.remove(prev);
         }
 
-        DonationFragment.newInstance().show(ft, TAG);
+        CreditsFragment.newInstance().show(ft, TAG);
     }
 
     @Override
     public Dialog onCreateDialog(Bundle savedInstanceState) {
-        final View view = LayoutInflater.from(getActivity()).inflate(R.layout.fragment_donation, null);
+        final View view = LayoutInflater.from(getActivity()).inflate(R.layout.fragment_credits, null);
 
-        ((TextView) view.findViewById(R.id.tvCredits)).setText(Html.fromHtml(getString(R.string.donation_credits)));
+        ((TextView) view.findViewById(R.id.tvCredits)).setText(Html.fromHtml(getString(R.string.credits_text)));
-
-        (view.findViewById(R.id.bCopyAddress)).
-                setOnClickListener(new View.OnClickListener() {
-                    @Override
-                    public void onClick(View v) {
-                        Helper.clipBoardCopy(getActivity(), getString(R.string.label_copy_address),
-                                ((TextView) view.findViewById(R.id.tvWalletAddress)).getText().toString());
-                        Toast.makeText(getActivity(), getString(R.string.message_copy_address), Toast.LENGTH_SHORT).show();
-                    }
-                });
 
         AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
         builder.setView(view);

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendAddressWizardFragment.java

@@ -212,7 +212,7 @@ public class SendAddressWizardFragment extends SendWizardFragment {
     private boolean checkAddressNoError() {
         String address = etAddress.getEditText().getText().toString();
         return Wallet.isAddressValid(address)
-                || BitcoinAddressValidator.validate(address, WalletManager.getInstance().isTestNet());
+                || BitcoinAddressValidator.validate(address);
     }
 
     private boolean checkAddress() {
@@ -228,13 +228,13 @@ public class SendAddressWizardFragment extends SendWizardFragment {
     private boolean isIntegratedAddress() {
         String address = etAddress.getEditText().getText().toString();
         return (address.length() == INTEGRATED_ADDRESS_LENGTH)
-                && Wallet.isAddressValid(address, WalletManager.getInstance().isTestNet());
+                && Wallet.isAddressValid(address);
     }
 
     private boolean isBitcoinAddress() {
         String address = etAddress.getEditText().getText().toString();
         if ((address.length() >= 27) && (address.length() <= 34))
-            return BitcoinAddressValidator.validate(address, WalletManager.getInstance().isTestNet());
+            return BitcoinAddressValidator.validate(address);
         else
             return false;
     }

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendFragment.java

@@ -17,6 +17,7 @@
 package com.m2049r.xmrwallet.fragment.send;
 
 import android.content.Context;
+import android.content.SharedPreferences;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
@@ -41,9 +42,11 @@ import com.m2049r.xmrwallet.data.BarcodeData;
 import com.m2049r.xmrwallet.data.PendingTx;
 import com.m2049r.xmrwallet.data.TxData;
 import com.m2049r.xmrwallet.data.TxDataBtc;
+import com.m2049r.xmrwallet.dialog.HelpFragment;
 import com.m2049r.xmrwallet.layout.SpendViewPager;
 import com.m2049r.xmrwallet.model.PendingTransaction;
 import com.m2049r.xmrwallet.util.Helper;
+import com.m2049r.xmrwallet.util.NodeList;
 import com.m2049r.xmrwallet.util.UserNotes;
 import com.m2049r.xmrwallet.widget.DotBar;
 import com.m2049r.xmrwallet.widget.Toolbar;
@@ -63,6 +66,8 @@ public class SendFragment extends Fragment
     private Listener activityCallback;
 
     public interface Listener {
+        SharedPreferences getPrefs();
+
         long getTotalFunds();
 
         void onPrepareSend(String tag, TxData data);
@@ -93,6 +98,10 @@ public class SendFragment extends Fragment
 
     private Button bDone;
 
+    private View llXmrToEnabled;
+    private View ibXmrToInfoClose;
+
+
     static private int MAX_FALLBACK = Integer.MAX_VALUE;
 
     @Override
@@ -110,6 +119,28 @@ public class SendFragment extends Fragment
         arrowPrev = getResources().getDrawable(R.drawable.ic_navigate_prev_white_24dp);
         arrowNext = getResources().getDrawable(R.drawable.ic_navigate_next_white_24dp);
 
+        llXmrToEnabled = view.findViewById(R.id.llXmrToEnabled);
+        llXmrToEnabled.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                HelpFragment.display(getChildFragmentManager(), R.string.help_xmrto);
+
+            }
+        });
+        ibXmrToInfoClose = view.findViewById(R.id.ibXmrToInfoClose);
+        ibXmrToInfoClose.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                llXmrToEnabled.setVisibility(View.GONE);
+                showXmrtoEnabled = false;
+                saveXmrToPrefs();
+            }
+        });
+        loadPrefs();
+        if (!showXmrtoEnabled) {
+            llXmrToEnabled.setVisibility(View.GONE);
+        }
+
         spendViewPager = (SpendViewPager) view.findViewById(R.id.pager);
         pagerAdapter = new SpendPagerAdapter(getChildFragmentManager());
         spendViewPager.setOffscreenPageLimit(pagerAdapter.getCount()); // load & keep all pages in cache
@@ -518,4 +549,22 @@ public class SendFragment extends Fragment
         inflater.inflate(R.menu.send_menu, menu);
         super.onCreateOptionsMenu(menu, inflater);
     }
+
+    // xmr.to info box
+    private static final String PREF_SHOW_XMRTO_ENABLED = "info_xmrto_enabled_send";
+
+    boolean showXmrtoEnabled = true;
+
+    void loadPrefs() {
+        SharedPreferences sharedPref = activityCallback.getPrefs();
+        showXmrtoEnabled = sharedPref.getBoolean(PREF_SHOW_XMRTO_ENABLED, true);
+    }
+
+    void saveXmrToPrefs() {
+        SharedPreferences sharedPref = activityCallback.getPrefs();
+        SharedPreferences.Editor editor = sharedPref.edit();
+        editor.putBoolean(PREF_SHOW_XMRTO_ENABLED, showXmrtoEnabled);
+        editor.apply();
+    }
+
 }

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendSettingsWizardFragment.java

@@ -54,7 +54,8 @@ public class SendSettingsWizardFragment extends SendWizardFragment {
         TxData getTxData();
     }
 
-    final static int Mixins[] = {4, 7, 12, 25}; // must match the layout XML
+    // Mixin = Ringsize - 1
+    final static int Mixins[] = {6, 9, 12, 25}; // must match the layout XML / "@array/mixin"
     final static PendingTransaction.Priority Priorities[] =
             {PendingTransaction.Priority.Priority_Default,
                     PendingTransaction.Priority.Priority_Low,

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendSuccessWizardFragment.java

@@ -77,7 +77,7 @@ public class SendSuccessWizardFragment extends SendWizardFragment {
             @Override
             public void onClick(View v) {
                 Helper.clipBoardCopy(getActivity(), getString(R.string.label_send_txid), tvTxId.getText().toString());
-                Toast.makeText(getActivity(), getString(R.string.message_copy_address), Toast.LENGTH_SHORT).show();
+                Toast.makeText(getActivity(), getString(R.string.message_copy_txid), Toast.LENGTH_SHORT).show();
             }
         });
 

app/src/main/java/com/m2049r/xmrwallet/layout/TransactionInfoAdapter.java

@@ -130,12 +130,14 @@ public class TransactionInfoAdapter extends RecyclerView.Adapter<TransactionInfo
         void bind(int position) {
             this.infoItem = infoItems.get(position);
 
-            long realAmount = infoItem.amount;
+            UserNotes userNotes = new UserNotes(infoItem.notes);
-            if (infoItem.isPending) {
+            if (userNotes.xmrtoKey != null) {
-                realAmount = realAmount - infoItem.fee;
+                ivTxType.setVisibility(View.VISIBLE);
+            } else {
+                ivTxType.setVisibility(View.GONE); // gives us more space for the amount
             }
 
-            String displayAmount = Helper.getDisplayAmount(realAmount, Helper.DISPLAY_DIGITS_INFO);
+            String displayAmount = Helper.getDisplayAmount(infoItem.amount, Helper.DISPLAY_DIGITS_INFO);
             if (infoItem.direction == TransactionInfo.Direction.Direction_Out) {
                 tvAmount.setText(context.getString(R.string.tx_list_amount_negative, displayAmount));
             } else {
@@ -163,13 +165,6 @@ public class TransactionInfoAdapter extends RecyclerView.Adapter<TransactionInfo
                 setTxColour(outboundColour);
             }
 
-            UserNotes userNotes = new UserNotes(infoItem.notes);
-            if (userNotes.xmrtoKey != null) {
-                ivTxType.setVisibility(View.VISIBLE);
-            } else {
-                ivTxType.setVisibility(View.INVISIBLE);
-            }
-
             if ((userNotes.note.isEmpty())) {
                 this.tvPaymentId.setText(infoItem.paymentId.equals("0000000000000000") ? "" : infoItem.paymentId);
             } else {

app/src/main/java/com/m2049r/xmrwallet/model/NetworkType.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2018 m2049r
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.m2049r.xmrwallet.model;
+
+public enum NetworkType {
+    NetworkType_Mainnet(0),
+    NetworkType_Testnet(1),
+    NetworkType_Stagenet(2);
+
+    public static NetworkType fromInteger(int n) {
+        switch (n) {
+            case 0:
+                return NetworkType_Mainnet;
+            case 1:
+                return NetworkType_Testnet;
+            case 2:
+                return NetworkType_Stagenet;
+        }
+        return null;
+    }
+
+    public int getValue() {
+        return value;
+    }
+
+    private int value;
+
+    NetworkType(int value) {
+        this.value = value;
+    }
+}

app/src/main/java/com/m2049r/xmrwallet/model/PendingTransaction.java

@@ -84,7 +84,14 @@ public class PendingTransaction {
 
     public native long getFee();
 
-    public native String getFirstTxId();
+    public String getFirstTxId() {
+        String id = getFirstTxIdJ();
+        if (id == null)
+            throw new IndexOutOfBoundsException();
+        return id;
+    }
+
+    public native String getFirstTxIdJ();
 
     public native long getTxCount();
 

app/src/main/java/com/m2049r/xmrwallet/model/Wallet.java

@@ -79,7 +79,11 @@ public class Wallet {
 
     public native String getPath();
 
-    public native boolean isTestNet();
+    public NetworkType getNetworkType() {
+        return NetworkType.fromInteger(nettype());
+    }
+
+    public native int nettype();
 
 //TODO virtual void hardForkInfo(uint8_t &version, uint64_t &earliest_height) const = 0;
 //TODO virtual bool useForkRules(uint8_t version, int64_t early_blocks) const = 0;
@@ -155,10 +159,10 @@ public class Wallet {
     public static native boolean isPaymentIdValid(String payment_id);
 
     public static boolean isAddressValid(String address) {
-        return isAddressValid(address, WalletManager.getInstance().isTestNet());
+        return isAddressValid(address, WalletManager.getInstance().getNetworkType().getValue());
     }
 
-    public static native boolean isAddressValid(String address, boolean isTestNet);
+    public static native boolean isAddressValid(String address, int networkType);
 
 //TODO static static bool keyValid(const std::string &secret_key_string, const std::string &address_string, bool isViewKey, bool testnet, std::string &error);
 

app/src/main/java/com/m2049r/xmrwallet/model/WalletManager.java

@@ -16,6 +16,8 @@
 
 package com.m2049r.xmrwallet.model;
 
+import com.m2049r.xmrwallet.data.WalletNode;
+
 import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileReader;
@@ -69,49 +71,51 @@ public class WalletManager {
     }
 
     public Wallet createWallet(File aFile, String password, String language) {
-        long walletHandle = createWalletJ(aFile.getAbsolutePath(), password, language, isTestNet());
+        long walletHandle = createWalletJ(aFile.getAbsolutePath(), password, language, getNetworkType().getValue());
         Wallet wallet = new Wallet(walletHandle);
         manageWallet(wallet);
         return wallet;
     }
 
-    private native long createWalletJ(String path, String password, String language, boolean isTestNet);
+    private native long createWalletJ(String path, String password, String language, int networkType);
 
     public Wallet openWallet(String path, String password) {
-        long walletHandle = openWalletJ(path, password, isTestNet());
+        long walletHandle = openWalletJ(path, password, getNetworkType().getValue());
         Wallet wallet = new Wallet(walletHandle);
         manageWallet(wallet);
         return wallet;
     }
 
-    private native long openWalletJ(String path, String password, boolean isTestNet);
+    private native long openWalletJ(String path, String password, int networkType);
 
-    public Wallet recoveryWallet(File aFile, String mnemonic) {
+    public Wallet recoveryWallet(File aFile, String password, String mnemonic) {
-        Wallet wallet = recoveryWallet(aFile, mnemonic, 0);
+        return recoveryWallet(aFile, password, mnemonic, 0);
-        manageWallet(wallet);
-        return wallet;
     }
 
-    public Wallet recoveryWallet(File aFile, String mnemonic, long restoreHeight) {
+    public Wallet recoveryWallet(File aFile, String password, String mnemonic, long restoreHeight) {
-        long walletHandle = recoveryWalletJ(aFile.getAbsolutePath(), mnemonic, isTestNet(), restoreHeight);
+        long walletHandle = recoveryWalletJ(aFile.getAbsolutePath(), password, mnemonic,
+                getNetworkType().getValue(), restoreHeight);
         Wallet wallet = new Wallet(walletHandle);
         manageWallet(wallet);
         return wallet;
     }
 
-    private native long recoveryWalletJ(String path, String mnemonic, boolean isTestNet, long restoreHeight);
+    private native long recoveryWalletJ(String path, String password, String mnemonic,
+                                        int networkType, long restoreHeight);
 
-    public Wallet createWalletFromKeys(File aFile, String language, long restoreHeight,
+    public Wallet createWalletWithKeys(File aFile, String password, String language, long restoreHeight,
                                        String addressString, String viewKeyString, String spendKeyString) {
-        long walletHandle = createWalletFromKeysJ(aFile.getAbsolutePath(), language, isTestNet(), restoreHeight,
+        long walletHandle = createWalletFromKeysJ(aFile.getAbsolutePath(), password,
+                language, getNetworkType().getValue(), restoreHeight,
                 addressString, viewKeyString, spendKeyString);
         Wallet wallet = new Wallet(walletHandle);
         manageWallet(wallet);
         return wallet;
     }
 
-    private native long createWalletFromKeysJ(String path, String language,
+    private native long createWalletFromKeysJ(String path, String password,
-                                              boolean isTestNet,
+                                              String language,
+                                              int networkType,
                                               long restoreHeight,
                                               String addressString,
                                               String viewKeyString,
@@ -202,24 +206,23 @@ public class WalletManager {
 //TODO virtual bool checkPayment(const std::string &address, const std::string &txid, const std::string &txkey, const std::string &daemon_address, uint64_t &received, uint64_t &height, std::string &error) const = 0;
 
     private String daemonAddress = null;
-    private boolean testnet = true;
+    private NetworkType networkType = null;
 
-    public boolean isTestNet() {
+    public NetworkType getNetworkType() {
-        if (daemonAddress == null) {
+        return networkType;
-            return true;
-            // assume testnet not explicitly initialised
-            //throw new IllegalStateException("use setDaemon() to initialise daemon and net first!");
-        }
-        return testnet;
     }
 
-    public void setDaemon(String address, boolean testnet, String username, String password) {
+    //public void setDaemon(String address, NetworkType networkType, String username, String password) {
-        //Timber.d("SETDAEMON " + username + "/" + password + "/" + address);
+    public void setDaemon(WalletNode walletNode) {
-        this.daemonAddress = address;
+        this.daemonAddress = walletNode.getAddress();
-        this.testnet = testnet;
+        this.networkType = networkType;
-        this.daemonUsername = username;
+        this.daemonUsername = walletNode.getUsername();
-        this.daemonPassword = password;
+        this.daemonPassword = walletNode.getPassword();
-        setDaemonAddressJ(address);
+        setDaemonAddressJ(daemonAddress);
+    }
+
+    public void setNetworkType(NetworkType networkType) {
+        this.networkType = networkType;
     }
 
     public String getDaemonAddress() {

app/src/main/java/com/m2049r/xmrwallet/service/WalletService.java

@@ -524,7 +524,7 @@ public class WalletService extends Service {
         showProgress(20);
         Wallet wallet = null;
         WalletManager walletMgr = WalletManager.getInstance();
-        Timber.d("WalletManager testnet=%s", walletMgr.isTestNet());
+        Timber.d("WalletManager network=%s", walletMgr.getNetworkType().name());
         showProgress(30);
         if (walletMgr.walletExists(path)) {
             Timber.d("open wallet %s", path);

app/src/main/java/com/m2049r/xmrwallet/util/BitcoinAddressValidator.java

@@ -18,6 +18,9 @@ package com.m2049r.xmrwallet.util;
 
 // based on https://rosettacode.org/wiki/Bitcoin/address_validation#Java
 
+import com.m2049r.xmrwallet.model.NetworkType;
+import com.m2049r.xmrwallet.model.WalletManager;
+
 import java.math.BigInteger;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
@@ -27,6 +30,11 @@ public class BitcoinAddressValidator {
 
     private static final String ALPHABET = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
 
+    public static boolean validate(String addrress) {
+        return validate(addrress,
+                WalletManager.getInstance().getNetworkType() != NetworkType.NetworkType_Mainnet);
+    }
+
     public static boolean validate(String addrress, boolean testnet) {
         if (addrress.length() < 26 || addrress.length() > 35)
             return false;
@@ -34,10 +42,11 @@ public class BitcoinAddressValidator {
         if (decoded == null)
             return false;
 
+        int v = decoded[0] & 0xFF;
         if (!testnet) {
-            if ((decoded[0] != 0x00) && (decoded[0] != 0x05)) return false;
+            if ((v != 0x00) && (v != 0x05)) return false;
         } else {
-            if ((decoded[0] != 0x6f) && (decoded[0] != 0xc4)) return false;
+            if ((v != 0x6f) && (v != 0xc4)) return false;
         }
 
         byte[] hash1 = sha256(Arrays.copyOfRange(decoded, 0, 21));
@@ -57,7 +66,11 @@ public class BitcoinAddressValidator {
 
         byte[] result = new byte[25];
         byte[] numBytes = num.toByteArray();
-        System.arraycopy(numBytes, 0, result, result.length - numBytes.length, numBytes.length);
+        if (num.bitLength() == 200) {
+            System.arraycopy(numBytes, 1, result, 0, 25);
+        } else {
+            System.arraycopy(numBytes, 0, result, result.length - numBytes.length, numBytes.length);
+        }
         return result;
     }
 

app/src/main/java/com/m2049r/xmrwallet/util/Helper.java

@@ -31,12 +31,15 @@ import android.graphics.drawable.Drawable;
 import android.graphics.drawable.VectorDrawable;
 import android.os.Environment;
 import android.support.v4.content.ContextCompat;
+import android.system.ErrnoException;
+import android.system.Os;
 import android.view.WindowManager;
 import android.view.animation.Animation;
 import android.view.animation.AnimationUtils;
 import android.view.inputmethod.InputMethodManager;
 
 import com.m2049r.xmrwallet.R;
+import com.m2049r.xmrwallet.model.NetworkType;
 import com.m2049r.xmrwallet.model.Wallet;
 import com.m2049r.xmrwallet.model.WalletManager;
 
@@ -55,27 +58,21 @@ import timber.log.Timber;
 
 public class Helper {
     static private final String WALLET_DIR = "monerujo";
+    static private final String HOME_DIR = "monero";
 
     static public int DISPLAY_DIGITS_INFO = 5;
 
-    static public File getNewWalletDir(Context context) {
+    static public File getWalletRoot(Context context) {
-        File newWalletDir = context.getDir("new", Context.MODE_PRIVATE);
+        return getStorage(context, WALLET_DIR);
-        Timber.d("new wallet directory is %s", newWalletDir.getAbsolutePath());
-        if (!newWalletDir.exists() || !newWalletDir.isDirectory()) {
-            String msg = newWalletDir.getAbsolutePath() + " is not a directory!";
-            Timber.e(msg);
-            throw new IllegalStateException(msg);
-        }
-        return newWalletDir;
     }
 
-    static public File getStorageRoot(Context context) {
+    static public File getStorage(Context context, String folderName) {
         if (!isExternalStorageWritable()) {
             String msg = context.getString(R.string.message_strorage_not_writable);
             Timber.e(msg);
             throw new IllegalStateException(msg);
         }
-        File dir = new File(Environment.getExternalStorageDirectory(), WALLET_DIR);
+        File dir = new File(Environment.getExternalStorageDirectory(), folderName);
         if (!dir.exists()) {
             Timber.i("Creating %s", dir.getAbsolutePath());
             dir.mkdirs(); // try to make it
@@ -125,9 +122,9 @@ public class Helper {
     }
 
     static public File getWalletFile(Context context, String aWalletName) {
-        File walletDir = getStorageRoot(context);
+        File walletDir = getWalletRoot(context);
         File f = new File(walletDir, aWalletName);
-        Timber.d("wallet= %s size= %d", f.getAbsolutePath(), f.length());
+        Timber.d("wallet=%s size= %d", f.getAbsolutePath(), f.length());
         return f;
     }
 
@@ -274,10 +271,20 @@ public class Helper {
     }
 
     static public HttpUrl getXmrToBaseUrl() {
-        if ((WalletManager.getInstance() == null) || WalletManager.getInstance().isTestNet()) {
+        if ((WalletManager.getInstance() == null)
+                || (WalletManager.getInstance().getNetworkType() != NetworkType.NetworkType_Mainnet)) {
             return HttpUrl.parse("https://test.xmr.to/api/v2/xmr2btc/");
         } else {
             return HttpUrl.parse("https://xmr.to/api/v2/xmr2btc/");
         }
     }
+
+    static public void setMoneroHome(Context context) {
+        try {
+            String home = getStorage(context, HOME_DIR).getAbsolutePath();
+            Os.setenv("HOME", home, true);
+        } catch (ErrnoException ex) {
+            throw new IllegalStateException(ex);
+        }
+    }
 }