bitmessage/Abit
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Some Bugfixes and some Kotlin that helped fixing the bugs

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This commit is contained in:
Christian Basler 2017-07-28 07:39:57 +02:00
parent e064012551
commit 898c49802b
19 changed files with 961 additions and 1048 deletions
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2
app/build.gradle
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@ -1,4 +1,5 @@
apply plugin: 'com.android.application' apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'idea' apply plugin: 'idea'
ext { ext {
@ -41,6 +42,7 @@ ext.jabitVersion = 'feature-exports-SNAPSHOT'
ext.supportVersion = '25.3.1' ext.supportVersion = '25.3.1'
dependencies { dependencies {
compile fileTree(dir: 'libs', include: ['*.jar']) compile fileTree(dir: 'libs', include: ['*.jar'])
compile "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
compile "com.android.support:appcompat-v7:$supportVersion" compile "com.android.support:appcompat-v7:$supportVersion"
compile "com.android.support:preference-v7:$supportVersion" compile "com.android.support:preference-v7:$supportVersion"

195
app/src/main/java/ch/dissem/apps/abit/repository/AndroidNodeRegistry.java
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@ -1,195 +0,0 @@
package ch.dissem.apps.abit.repository;
import android.content.ContentValues;
import android.database.Cursor;
import android.database.sqlite.SQLiteConstraintException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteDoneException;
import android.database.sqlite.SQLiteStatement;
import android.support.annotation.NonNull;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import ch.dissem.bitmessage.entity.valueobject.NetworkAddress;
import ch.dissem.bitmessage.exception.ApplicationException;
import ch.dissem.bitmessage.ports.NodeRegistry;
import ch.dissem.bitmessage.utils.Collections;
import ch.dissem.bitmessage.utils.SqlStrings;
import static ch.dissem.bitmessage.ports.NodeRegistryHelper.loadStableNodes;
import static ch.dissem.bitmessage.utils.Strings.hex;
import static ch.dissem.bitmessage.utils.UnixTime.DAY;
import static ch.dissem.bitmessage.utils.UnixTime.MINUTE;
import static ch.dissem.bitmessage.utils.UnixTime.now;
import static java.lang.String.valueOf;
/**
* @author Christian Basler
*/
public class AndroidNodeRegistry implements NodeRegistry {
private static final Logger LOG = LoggerFactory.getLogger(AndroidInventory.class);
private static final String TABLE_NAME = "Node";
private static final String COLUMN_STREAM = "stream";
private static final String COLUMN_ADDRESS = "address";
private static final String COLUMN_PORT = "port";
private static final String COLUMN_SERVICES = "services";
private static final String COLUMN_TIME = "time";
private final ThreadLocal<SQLiteStatement> loadExistingStatement = new ThreadLocal<>();
private final SqlHelper sql;
private Map<Long, Set<NetworkAddress>> stableNodes;
public AndroidNodeRegistry(SqlHelper sql) {
this.sql = sql;
cleanUp();
}
private void cleanUp() {
SQLiteDatabase db = sql.getWritableDatabase();
db.delete(TABLE_NAME, "time < ?", new String[]{valueOf(now() - 28 * DAY)});
}
@Override
public void clear() {
SQLiteDatabase db = sql.getWritableDatabase();
db.delete(TABLE_NAME, null, null);
}
private Long loadExistingTime(NetworkAddress node) {
SQLiteStatement statement = loadExistingStatement.get();
if (statement == null) {
statement = sql.getWritableDatabase().compileStatement(
"SELECT " + COLUMN_TIME +
" FROM " + TABLE_NAME +
" WHERE stream=? AND address=? AND port=?"
);
loadExistingStatement.set(statement);
}
statement.bindLong(1, node.getStream());
statement.bindBlob(2, node.getIPv6());
statement.bindLong(3, node.getPort());
try {
return statement.simpleQueryForLong();
} catch (SQLiteDoneException e) {
return null;
}
}
@NonNull
@Override
public List<NetworkAddress> getKnownAddresses(int limit, long... streams) {
String[] projection = {
COLUMN_STREAM,
COLUMN_ADDRESS,
COLUMN_PORT,
COLUMN_SERVICES,
COLUMN_TIME
};
List<NetworkAddress> result = new LinkedList<>();
SQLiteDatabase db = sql.getReadableDatabase();
try (Cursor c = db.query(
TABLE_NAME, projection,
"stream IN (?)",
new String[]{SqlStrings.join(streams)},
null, null,
"time DESC",
valueOf(limit)
)) {
while (c.moveToNext()) {
result.add(
new NetworkAddress.Builder()
.stream(c.getLong(c.getColumnIndex(COLUMN_STREAM)))
.ipv6(c.getBlob(c.getColumnIndex(COLUMN_ADDRESS)))
.port(c.getInt(c.getColumnIndex(COLUMN_PORT)))
.services(c.getLong(c.getColumnIndex(COLUMN_SERVICES)))
.time(c.getLong(c.getColumnIndex(COLUMN_TIME)))
.build()
);
}
} catch (Exception e) {
LOG.error(e.getMessage(), e);
throw new ApplicationException(e);
}
if (result.isEmpty()) {
synchronized (this) {
if (stableNodes == null) {
stableNodes = loadStableNodes();
}
}
for (long stream : streams) {
Set<NetworkAddress> nodes = stableNodes.get(stream);
if (nodes != null && !nodes.isEmpty()) {
result.add(Collections.selectRandom(nodes));
}
}
}
return result;
}
@Override
public void offerAddresses(List<NetworkAddress> nodes) {
SQLiteDatabase db = sql.getWritableDatabase();
db.beginTransaction();
try {
cleanUp();
for (NetworkAddress node : nodes) {
if (node.getTime() < now() + 5 * MINUTE && node.getTime() > now() - 28 * DAY) {
synchronized (this) {
Long existing = loadExistingTime(node);
if (existing == null) {
insert(node);
} else if (node.getTime() > existing) {
update(node);
}
}
}
}
db.setTransactionSuccessful();
} finally {
db.endTransaction();
}
}
private void insert(NetworkAddress node) {
try {
SQLiteDatabase db = sql.getWritableDatabase();
// Create a new map of values, where column names are the keys
ContentValues values = new ContentValues();
values.put(COLUMN_STREAM, node.getStream());
values.put(COLUMN_ADDRESS, node.getIPv6());
values.put(COLUMN_PORT, node.getPort());
values.put(COLUMN_SERVICES, node.getServices());
values.put(COLUMN_TIME, node.getTime());
db.insertOrThrow(TABLE_NAME, null, values);
} catch (SQLiteConstraintException e) {
LOG.trace(e.getMessage(), e);
}
}
private void update(NetworkAddress node) {
try {
SQLiteDatabase db = sql.getWritableDatabase();
// Create a new map of values, where column names are the keys
ContentValues values = new ContentValues();
values.put(COLUMN_SERVICES, node.getServices());
values.put(COLUMN_TIME, node.getTime());
db.update(TABLE_NAME, values,
"stream=" + node.getStream() + " AND address=X'" + hex(node.getIPv6()) + "' AND " +
"port=" + node.getPort(),
null);
} catch (SQLiteConstraintException e) {
LOG.trace(e.getMessage(), e);
}
}
}

172
app/src/main/java/ch/dissem/apps/abit/repository/AndroidNodeRegistry.kt Normal file
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@ -0,0 +1,172 @@
package ch.dissem.apps.abit.repository
import android.content.ContentValues
import android.database.sqlite.SQLiteConstraintException
import android.database.sqlite.SQLiteDoneException
import android.database.sqlite.SQLiteStatement
import ch.dissem.bitmessage.entity.valueobject.NetworkAddress
import ch.dissem.bitmessage.exception.ApplicationException
import ch.dissem.bitmessage.ports.NodeRegistry
import ch.dissem.bitmessage.ports.NodeRegistryHelper.loadStableNodes
import ch.dissem.bitmessage.utils.Collections
import ch.dissem.bitmessage.utils.SqlStrings
import ch.dissem.bitmessage.utils.Strings.hex
import ch.dissem.bitmessage.utils.UnixTime.DAY
import ch.dissem.bitmessage.utils.UnixTime.MINUTE
import ch.dissem.bitmessage.utils.UnixTime.now
import org.slf4j.LoggerFactory
import java.util.*
import kotlin.concurrent.getOrSet
const val MAX_ENTRY_AGE = 7 * DAY
/**
* @author Christian Basler
*/
class AndroidNodeRegistry(private val sql: SqlHelper) : NodeRegistry {
private val loadExistingStatement = ThreadLocal<SQLiteStatement>()
private var stableNodes: Map<Long, Set<NetworkAddress>> = emptyMap()
get() {
if (field.isEmpty())
field = loadStableNodes()
return field
}
init {
cleanUp()
}
private fun cleanUp() {
sql.writableDatabase.delete(TABLE_NAME, "time < ?", arrayOf((now - MAX_ENTRY_AGE).toString()))
}
override fun clear() {
sql.writableDatabase.delete(TABLE_NAME, null, null)
}
private fun loadExistingTime(node: NetworkAddress): Long? {
val statement: SQLiteStatement = loadExistingStatement.getOrSet {
sql.writableDatabase.compileStatement(
"SELECT $COLUMN_TIME FROM $TABLE_NAME WHERE stream=? AND address=? AND port=?"
)
}
statement.bindLong(1, node.stream)
statement.bindBlob(2, node.IPv6)
statement.bindLong(3, node.port.toLong())
try {
return statement.simpleQueryForLong()
} catch (e: SQLiteDoneException) {
return null
}
}
override fun getKnownAddresses(limit: Int, vararg streams: Long): List<NetworkAddress> {
val projection = arrayOf(COLUMN_STREAM, COLUMN_ADDRESS, COLUMN_PORT, COLUMN_SERVICES, COLUMN_TIME)
val result = LinkedList<NetworkAddress>()
try {
sql.readableDatabase.query(
TABLE_NAME, projection,
"stream IN (?)",
arrayOf(SqlStrings.join(*streams)), null, null,
"time DESC",
limit.toString()
).use { c ->
while (c.moveToNext()) {
result.add(NetworkAddress(
time = c.getLong(c.getColumnIndex(COLUMN_TIME)),
stream = c.getLong(c.getColumnIndex(COLUMN_STREAM)),
services = c.getLong(c.getColumnIndex(COLUMN_SERVICES)),
IPv6 = c.getBlob(c.getColumnIndex(COLUMN_ADDRESS)),
port = c.getInt(c.getColumnIndex(COLUMN_PORT))
))
}
}
} catch (e: Exception) {
LOG.error(e.message, e)
throw ApplicationException(e)
}
if (result.isEmpty()) {
streams
.asSequence()
.mapNotNull { stableNodes[it] }
.filterNot { it.isEmpty() }
.mapTo(result) { Collections.selectRandom(it) }
}
return result
}
override fun offerAddresses(nodes: List<NetworkAddress>) {
val db = sql.writableDatabase
db.beginTransaction()
try {
cleanUp()
nodes
.filter {
// Don't accept nodes from the future, it might be a trap
it.time < now + 5 * MINUTE && it.time > now - MAX_ENTRY_AGE
}
.forEach { node ->
synchronized(this) {
val existing = loadExistingTime(node)
if (existing == null) {
insert(node)
} else if (node.time > existing) {
update(node)
}
}
}
db.setTransactionSuccessful()
} finally {
db.endTransaction()
}
}
private fun insert(node: NetworkAddress) {
try {
// Create a new map of values, where column names are the keys
val values = ContentValues()
values.put(COLUMN_STREAM, node.stream)
values.put(COLUMN_ADDRESS, node.IPv6)
values.put(COLUMN_PORT, node.port)
values.put(COLUMN_SERVICES, node.services)
values.put(COLUMN_TIME, node.time)
sql.writableDatabase.insertOrThrow(TABLE_NAME, null, values)
} catch (e: SQLiteConstraintException) {
LOG.trace(e.message, e)
}
}
private fun update(node: NetworkAddress) {
try {
// Create a new map of values, where column names are the keys
val values = ContentValues()
values.put(COLUMN_SERVICES, node.services)
values.put(COLUMN_TIME, node.time)
sql.writableDatabase.update(
TABLE_NAME,
values,
"stream=${node.stream} AND address=X'${hex(node.IPv6)}' AND port=${node.port}",
null
)
} catch (e: SQLiteConstraintException) {
LOG.trace(e.message, e)
}
}
companion object {
@JvmStatic
private val LOG = LoggerFactory.getLogger(AndroidInventory::class.java)
private const val TABLE_NAME = "Node"
private const val COLUMN_STREAM = "stream"
private const val COLUMN_ADDRESS = "address"
private const val COLUMN_PORT = "port"
private const val COLUMN_SERVICES = "services"
private const val COLUMN_TIME = "time"
}
}

106
app/src/main/java/ch/dissem/apps/abit/service/BitmessageService.java
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@ -1,106 +0,0 @@
/*
* Copyright 2016 Christian Basler
*
* 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 ch.dissem.apps.abit.service;
import android.app.Service;
import android.content.Intent;
import android.os.Handler;
import android.os.IBinder;
import android.support.annotation.Nullable;
import ch.dissem.apps.abit.notification.NetworkNotification;
import ch.dissem.bitmessage.BitmessageContext;
import ch.dissem.bitmessage.utils.Property;
import static ch.dissem.apps.abit.notification.NetworkNotification.NETWORK_NOTIFICATION_ID;
/**
* Define a Service that returns an IBinder for the
* sync adapter class, allowing the sync adapter framework to call
* onPerformSync().
*/
public class BitmessageService extends Service {
private static BitmessageContext bmc = null;
private static volatile boolean running = false;
private NetworkNotification notification = null;
private final Handler cleanupHandler = new Handler();
private final Runnable cleanupTask = new Runnable() {
@Override
public void run() {
bmc.cleanup();
if (isRunning()) {
cleanupHandler.postDelayed(this, 24 * 60 * 60 * 1000L);
}
}
};
public static boolean isRunning() {
return running && bmc.isRunning();
}
@Override
public void onCreate() {
if (bmc == null) {
bmc = Singleton.getBitmessageContext(this);
}
notification = new NetworkNotification(this);
running = false;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
if (!isRunning()) {
running = true;
notification.connecting();
startForeground(NETWORK_NOTIFICATION_ID, notification.getNotification());
if (!bmc.isRunning()) {
bmc.startup();
}
notification.show();
cleanupHandler.postDelayed(cleanupTask, 24 * 60 * 60 * 1000L);
}
return Service.START_STICKY;
}
@Override
public void onDestroy() {
if (bmc.isRunning()) {
bmc.shutdown();
}
running = false;
notification.showShutdown();
cleanupHandler.removeCallbacks(cleanupTask);
bmc.cleanup();
stopSelf();
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
public static Property getStatus() {
if (bmc != null) {
return bmc.status();
} else {
return new Property("bitmessage context");
}
}
}

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app/src/main/java/ch/dissem/apps/abit/service/BitmessageService.kt Normal file
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@ -0,0 +1,90 @@
/*
* Copyright 2016 Christian Basler
*
* 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 ch.dissem.apps.abit.service
import android.app.Service
import android.content.Intent
import android.os.Handler
import ch.dissem.apps.abit.notification.NetworkNotification
import ch.dissem.apps.abit.notification.NetworkNotification.NETWORK_NOTIFICATION_ID
import ch.dissem.bitmessage.BitmessageContext
import ch.dissem.bitmessage.utils.Property
/**
* Define a Service that returns an IBinder for the
* sync adapter class, allowing the sync adapter framework to call
* onPerformSync().
*/
class BitmessageService : Service() {
private val bmc: BitmessageContext by lazy { Singleton.getBitmessageContext(this) }
private lateinit var notification: NetworkNotification
private val cleanupHandler = Handler()
private val cleanupTask = object : Runnable {
override fun run() {
bmc.cleanup()
if (isRunning) {
cleanupHandler.postDelayed(this, 24 * 60 * 60 * 1000L) // once a day
}
}
}
override fun onCreate() {
notification = NetworkNotification(this)
running = false
}
override fun onStartCommand(intent: Intent, flags: Int, startId: Int): Int {
if (!isRunning) {
running = true
notification.connecting()
startForeground(NETWORK_NOTIFICATION_ID, notification.notification)
if (!bmc.isRunning()) {
bmc.startup()
}
notification.show()
cleanupHandler.postDelayed(cleanupTask, 24 * 60 * 60 * 1000L)
}
return Service.START_STICKY
}
override fun onDestroy() {
if (bmc.isRunning()) {
bmc.shutdown()
}
running = false
notification.showShutdown()
cleanupHandler.removeCallbacks(cleanupTask)
bmc.cleanup()
stopSelf()
}
override fun onBind(intent: Intent) = null
companion object {
@Volatile private var running = false
@JvmStatic
val isRunning: Boolean
get() = running && Singleton.bitmessageContext?.isRunning() ?: false
@JvmStatic
val status: Property
get() = Singleton.bitmessageContext?.status() ?: Property("bitmessage context")
}
}

177
app/src/main/java/ch/dissem/apps/abit/service/Singleton.java
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@ -1,177 +0,0 @@
/*
* Copyright 2016 Christian Basler
*
* 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 ch.dissem.apps.abit.service;
import android.content.Context;
import android.os.AsyncTask;
import android.widget.Toast;
import java.util.List;
import ch.dissem.apps.abit.MainActivity;
import ch.dissem.apps.abit.R;
import ch.dissem.apps.abit.adapter.AndroidCryptography;
import ch.dissem.apps.abit.adapter.SwitchingProofOfWorkEngine;
import ch.dissem.apps.abit.listener.MessageListener;
import ch.dissem.apps.abit.pow.ServerPowEngine;
import ch.dissem.apps.abit.repository.AndroidAddressRepository;
import ch.dissem.apps.abit.repository.AndroidInventory;
import ch.dissem.apps.abit.repository.AndroidMessageRepository;
import ch.dissem.apps.abit.repository.AndroidNodeRegistry;
import ch.dissem.apps.abit.repository.AndroidProofOfWorkRepository;
import ch.dissem.apps.abit.repository.SqlHelper;
import ch.dissem.apps.abit.util.Constants;
import ch.dissem.bitmessage.BitmessageContext;
import ch.dissem.bitmessage.entity.BitmessageAddress;
import ch.dissem.bitmessage.entity.payload.Pubkey;
import ch.dissem.bitmessage.networking.nio.NioNetworkHandler;
import ch.dissem.bitmessage.ports.AddressRepository;
import ch.dissem.bitmessage.ports.MessageRepository;
import ch.dissem.bitmessage.ports.ProofOfWorkRepository;
import ch.dissem.bitmessage.utils.ConversationService;
import ch.dissem.bitmessage.utils.TTL;
import static ch.dissem.bitmessage.utils.UnixTime.DAY;
/**
* Provides singleton objects across the application.
*/
public class Singleton {
private static BitmessageContext bitmessageContext;
private static ConversationService conversationService;
private static MessageListener messageListener;
private static BitmessageAddress identity;
private static AndroidProofOfWorkRepository powRepo;
private static boolean creatingIdentity;
public static BitmessageContext getBitmessageContext(Context context) {
if (bitmessageContext == null) {
synchronized (Singleton.class) {
if (bitmessageContext == null) {
final Context ctx = context.getApplicationContext();
SqlHelper sqlHelper = new SqlHelper(ctx);
powRepo = new AndroidProofOfWorkRepository(sqlHelper);
TTL.pubkey(2 * DAY);
bitmessageContext = new BitmessageContext.Builder()
.proofOfWorkEngine(new SwitchingProofOfWorkEngine(
ctx, Constants.PREFERENCE_SERVER_POW,
new ServerPowEngine(ctx),
new ServicePowEngine(ctx)
))
.cryptography(new AndroidCryptography())
.nodeRegistry(new AndroidNodeRegistry(sqlHelper))
.inventory(new AndroidInventory(sqlHelper))
.addressRepo(new AndroidAddressRepository(sqlHelper))
.messageRepo(new AndroidMessageRepository(sqlHelper, ctx))
.powRepo(powRepo)
.networkHandler(new NioNetworkHandler())
.listener(getMessageListener(ctx))
.doNotSendPubkeyOnIdentityCreation()
.build();
}
}
}
return bitmessageContext;
}
public static MessageListener getMessageListener(Context ctx) {
if (messageListener == null) {
synchronized (Singleton.class) {
if (messageListener == null) {
messageListener = new MessageListener(ctx);
}
}
}
return messageListener;
}
public static AndroidMessageRepository getMessageRepository(Context ctx) {
return (AndroidMessageRepository) getBitmessageContext(ctx).messages();
}
public static AndroidAddressRepository getAddressRepository(Context ctx) {
return (AndroidAddressRepository) getBitmessageContext(ctx).addresses();
}
public static ProofOfWorkRepository getProofOfWorkRepository(Context ctx) {
if (powRepo == null) getBitmessageContext(ctx);
return powRepo;
}
public static BitmessageAddress getIdentity(final Context ctx) {
if (identity == null) {
final BitmessageContext bmc = getBitmessageContext(ctx);
synchronized (Singleton.class) {
if (identity == null) {
List<BitmessageAddress> identities = bmc.addresses()
.getIdentities();
if (identities.size() > 0) {
identity = identities.get(0);
} else {
if (!creatingIdentity) {
creatingIdentity = true;
new AsyncTask<Void, Void, BitmessageAddress>() {
@Override
protected BitmessageAddress doInBackground(Void... args) {
BitmessageAddress identity = bmc.createIdentity(false,
Pubkey.Feature.DOES_ACK);
identity.setAlias(
ctx.getString(R.string.alias_default_identity)
);
bmc.addresses().save(identity);
return identity;
}
@Override
protected void onPostExecute(BitmessageAddress identity) {
Singleton.identity = identity;
Toast.makeText(ctx,
R.string.toast_identity_created,
Toast.LENGTH_SHORT).show();
MainActivity mainActivity = MainActivity.getInstance();
if (mainActivity != null) {
mainActivity.addIdentityEntry(identity);
}
}
}.execute();
}
return null;
}
}
}
}
return identity;
}
public static void setIdentity(BitmessageAddress identity) {
if (identity.getPrivateKey() == null)
throw new IllegalArgumentException("Identity expected, but no private key available");
Singleton.identity = identity;
}
public static ConversationService getConversationService(Context ctx) {
if (conversationService == null) {
final BitmessageContext bmc = getBitmessageContext(ctx);
synchronized (Singleton.class) {
if (conversationService == null) {
conversationService = new ConversationService(bmc.messages());
}
}
}
return conversationService;
}
}

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app/src/main/java/ch/dissem/apps/abit/service/Singleton.kt Normal file
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/*
* Copyright 2016 Christian Basler
*
* 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 ch.dissem.apps.abit.service
import android.content.Context
import android.os.AsyncTask
import android.widget.Toast
import ch.dissem.apps.abit.MainActivity
import ch.dissem.apps.abit.R
import ch.dissem.apps.abit.adapter.AndroidCryptography
import ch.dissem.apps.abit.adapter.SwitchingProofOfWorkEngine
import ch.dissem.apps.abit.listener.MessageListener
import ch.dissem.apps.abit.pow.ServerPowEngine
import ch.dissem.apps.abit.repository.*
import ch.dissem.apps.abit.util.Constants
import ch.dissem.bitmessage.BitmessageContext
import ch.dissem.bitmessage.entity.BitmessageAddress
import ch.dissem.bitmessage.entity.payload.Pubkey
import ch.dissem.bitmessage.networking.nio.NioNetworkHandler
import ch.dissem.bitmessage.ports.ProofOfWorkRepository
import ch.dissem.bitmessage.utils.ConversationService
import ch.dissem.bitmessage.utils.TTL
import ch.dissem.bitmessage.utils.UnixTime.DAY
/**
* Provides singleton objects across the application.
*/
object Singleton {
var bitmessageContext: BitmessageContext? = null
private set
private var conversationService: ConversationService? = null
private var messageListener: MessageListener? = null
private var identity: BitmessageAddress? = null
private var powRepo: AndroidProofOfWorkRepository? = null
private var creatingIdentity: Boolean = false
@JvmStatic
fun getBitmessageContext(context: Context): BitmessageContext {
if (bitmessageContext == null) {
synchronized(Singleton::class.java) {
if (bitmessageContext == null) {
val ctx = context.applicationContext
val sqlHelper = SqlHelper(ctx)
powRepo = AndroidProofOfWorkRepository(sqlHelper)
TTL.pubkey = 2 * DAY
bitmessageContext = BitmessageContext.Builder()
.proofOfWorkEngine(SwitchingProofOfWorkEngine(
ctx, Constants.PREFERENCE_SERVER_POW,
ServerPowEngine(ctx),
ServicePowEngine(ctx)
))
.cryptography(AndroidCryptography())
.nodeRegistry(AndroidNodeRegistry(sqlHelper))
.inventory(AndroidInventory(sqlHelper))
.addressRepo(AndroidAddressRepository(sqlHelper))
.messageRepo(AndroidMessageRepository(sqlHelper, ctx))
.powRepo(powRepo!!)
.networkHandler(NioNetworkHandler())
.listener(getMessageListener(ctx))
.doNotSendPubkeyOnIdentityCreation()
.build()
}
}
}
return bitmessageContext!!
}
@JvmStatic
fun getMessageListener(ctx: Context): MessageListener {
if (messageListener == null) {
synchronized(Singleton::class.java) {
if (messageListener == null) {
messageListener = MessageListener(ctx)
}
}
}
return messageListener!!
}
@JvmStatic
fun getMessageRepository(ctx: Context): AndroidMessageRepository {
return getBitmessageContext(ctx).messages as AndroidMessageRepository
}
@JvmStatic
fun getAddressRepository(ctx: Context): AndroidAddressRepository {
return getBitmessageContext(ctx).addresses as AndroidAddressRepository
}
@JvmStatic
fun getProofOfWorkRepository(ctx: Context): ProofOfWorkRepository {
if (powRepo == null) getBitmessageContext(ctx)
return powRepo!!
}
@JvmStatic
fun getIdentity(ctx: Context): BitmessageAddress? {
if (identity == null) {
val bmc = getBitmessageContext(ctx)
synchronized(Singleton::class) {
if (identity == null) {
val identities = bmc.addresses.getIdentities()
if (identities.isNotEmpty()) {
identity = identities[0]
} else {
if (!creatingIdentity) {
creatingIdentity = true
object : AsyncTask<Void, Void, BitmessageAddress>() {
override fun doInBackground(vararg args: Void): BitmessageAddress {
val identity = bmc.createIdentity(false,
Pubkey.Feature.DOES_ACK)
identity.alias = ctx.getString(R.string.alias_default_identity)
bmc.addresses.save(identity)
return identity
}
override fun onPostExecute(identity: BitmessageAddress) {
Singleton.identity = identity
Toast.makeText(ctx,
R.string.toast_identity_created,
Toast.LENGTH_SHORT).show()
val mainActivity = MainActivity.getInstance()
mainActivity?.addIdentityEntry(identity)
}
}.execute()
}
return null
}
}
}
}
return identity
}
@JvmStatic
fun setIdentity(identity: BitmessageAddress) {
if (identity.privateKey == null)
throw IllegalArgumentException("Identity expected, but no private key available")
Singleton.identity = identity
}
@JvmStatic
fun getConversationService(ctx: Context): ConversationService {
if (conversationService == null) {
val bmc = getBitmessageContext(ctx)
synchronized(Singleton::class.java) {
if (conversationService == null) {
conversationService = ConversationService(bmc.messages)
}
}
}
return conversationService!!
}
}

98
app/src/main/java/ch/dissem/apps/abit/synchronization/Authenticator.java
View File

@ -1,98 +0,0 @@
/*
* Copyright 2016 Christian Basler
*
* 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 ch.dissem.apps.abit.synchronization;
import android.accounts.AbstractAccountAuthenticator;
import android.accounts.Account;
import android.accounts.AccountAuthenticatorResponse;
import android.accounts.NetworkErrorException;
import android.content.Context;
import android.os.Bundle;
/*
* Implement AbstractAccountAuthenticator and stub out all
* of its methods
*/
public class Authenticator extends AbstractAccountAuthenticator {
public static final Account ACCOUNT_SYNC = new Account("Bitmessage", "ch.dissem.bitmessage");
public static final Account ACCOUNT_POW = new Account("Proof of Work ", "ch.dissem.bitmessage");
// Simple constructor
public Authenticator(Context context) {
super(context);
}
// Editing properties is not supported
@Override
public Bundle editProperties(
AccountAuthenticatorResponse r, String s) {
throw new UnsupportedOperationException();
}
// Don't add additional accounts
@Override
public Bundle addAccount(
AccountAuthenticatorResponse r,
String s,
String s2,
String[] strings,
Bundle bundle) throws NetworkErrorException {
return null;
}
// Ignore attempts to confirm credentials
@Override
public Bundle confirmCredentials(
AccountAuthenticatorResponse r,
Account account,
Bundle bundle) throws NetworkErrorException {
return null;
}
// Getting an authentication token is not supported
@Override
public Bundle getAuthToken(
AccountAuthenticatorResponse r,
Account account,
String s,
Bundle bundle) throws NetworkErrorException {
throw new UnsupportedOperationException();
}
// Getting a label for the auth token is not supported
@Override
public String getAuthTokenLabel(String s) {
throw new UnsupportedOperationException();
}
// Updating user credentials is not supported
@Override
public Bundle updateCredentials(
AccountAuthenticatorResponse r,
Account account,
String s, Bundle bundle) throws NetworkErrorException {
throw new UnsupportedOperationException();
}
// Checking features for the account is not supported
@Override
public Bundle hasFeatures(
AccountAuthenticatorResponse r,
Account account, String[] strings) throws NetworkErrorException {
throw new UnsupportedOperationException();
}
}

79
app/src/main/java/ch/dissem/apps/abit/synchronization/Authenticator.kt Normal file
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@ -0,0 +1,79 @@
/*
* Copyright 2016 Christian Basler
*
* 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 ch.dissem.apps.abit.synchronization
import android.accounts.AbstractAccountAuthenticator
import android.accounts.Account
import android.accounts.AccountAuthenticatorResponse
import android.accounts.NetworkErrorException
import android.content.Context
import android.os.Bundle
/**
* Implement AbstractAccountAuthenticator and stub out all
* of its methods
*/
class Authenticator(context: Context) : AbstractAccountAuthenticator(context) {
// Editing properties is not supported
override fun editProperties(r: AccountAuthenticatorResponse, s: String) = throw UnsupportedOperationException()
// Don't add additional accounts
@Throws(NetworkErrorException::class)
override fun addAccount(
r: AccountAuthenticatorResponse,
s: String,
s2: String,
strings: Array<String>,
bundle: Bundle) = null
// Ignore attempts to confirm credentials
@Throws(NetworkErrorException::class)
override fun confirmCredentials(
r: AccountAuthenticatorResponse,
account: Account,
bundle: Bundle) = null
// Getting an authentication token is not supported
@Throws(NetworkErrorException::class)
override fun getAuthToken(
r: AccountAuthenticatorResponse,
account: Account,
s: String,
bundle: Bundle) = throw UnsupportedOperationException()
// Getting a label for the auth token is not supported
override fun getAuthTokenLabel(s: String) = throw UnsupportedOperationException()
// Updating user credentials is not supported
@Throws(NetworkErrorException::class)
override fun updateCredentials(
r: AccountAuthenticatorResponse,
account: Account,
s: String, bundle: Bundle) = throw UnsupportedOperationException()
// Checking features for the account is not supported
@Throws(NetworkErrorException::class)
override fun hasFeatures(
r: AccountAuthenticatorResponse,
account: Account, strings: Array<String>) = throw UnsupportedOperationException()
companion object {
@JvmField val ACCOUNT_SYNC = Account("Bitmessage", "ch.dissem.bitmessage")
@JvmField val ACCOUNT_POW = Account("Proof of Work ", "ch.dissem.bitmessage")
}
}

22
app/src/main/java/ch/dissem/apps/abit/synchronization/AuthenticatorService.java → app/src/main/java/ch/dissem/apps/abit/synchronization/AuthenticatorService.kt
View File

@ -14,34 +14,30 @@
* limitations under the License. * limitations under the License.
*/ */
package ch.dissem.apps.abit.synchronization; package ch.dissem.apps.abit.synchronization
import android.app.Service; import android.app.Service
import android.content.Intent; import android.content.Intent
import android.os.IBinder; import android.os.IBinder
/** /**
* A bound Service that instantiates the authenticator * A bound Service that instantiates the authenticator
* when started. * when started.
*/ */
public class AuthenticatorService extends Service { class AuthenticatorService : Service() {
/** /**
* Instance field that stores the authenticator object * Instance field that stores the authenticator object
*/ */
private Authenticator authenticator; private var authenticator: Authenticator? = null
@Override override fun onCreate() {
public void onCreate() {
// Create a new authenticator object // Create a new authenticator object
authenticator = new Authenticator(this); authenticator = Authenticator(this)
} }
/* /*
* When the system binds to this Service to make the RPC call * When the system binds to this Service to make the RPC call
* return the authenticator's IBinder. * return the authenticator's IBinder.
*/ */
@Override override fun onBind(intent: Intent) = authenticator?.iBinder
public IBinder onBind(Intent intent) {
return authenticator.getIBinder();
}
} }

89
app/src/main/java/ch/dissem/apps/abit/synchronization/StubProvider.java
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@ -1,89 +0,0 @@
/*
* Copyright 2016 Christian Basler
*
* 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 ch.dissem.apps.abit.synchronization;
import android.content.ContentProvider;
import android.content.ContentValues;
import android.database.Cursor;
import android.net.Uri;
import android.support.annotation.NonNull;
/*
* Define an implementation of ContentProvider that stubs out
* all methods
*/
public class StubProvider extends ContentProvider {
public static final String AUTHORITY = "ch.dissem.apps.abit.provider";
/*
* Always return true, indicating that the
* provider loaded correctly.
*/
@Override
public boolean onCreate() {
return true;
}
/*
* Return no type for MIME type
*/
@Override
public String getType(@NonNull Uri uri) {
return null;
}
/*
* query() always returns no results
*
*/
@Override
public Cursor query(
@NonNull Uri uri,
String[] projection,
String selection,
String[] selectionArgs,
String sortOrder) {
return null;
}
/*
* insert() always returns null (no URI)
*/
@Override
public Uri insert(@NonNull Uri uri, ContentValues values) {
return null;
}
/*
* delete() always returns "no rows affected" (0)
*/
@Override
public int delete(@NonNull Uri uri, String selection, String[] selectionArgs) {
return 0;
}
/*
* update() always returns "no rows affected" (0)
*/
public int update(
@NonNull Uri uri,
ContentValues values,
String selection,
String[] selectionArgs) {
return 0;
}
}

72
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@ -0,0 +1,72 @@
/*
* Copyright 2016 Christian Basler
*
* 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 ch.dissem.apps.abit.synchronization
import android.content.ContentProvider
import android.content.ContentValues
import android.net.Uri
/*
* Define an implementation of ContentProvider that stubs out
* all methods
*/
class StubProvider : ContentProvider() {
/**
* Always return true, indicating that the
* provider loaded correctly.
*/
override fun onCreate() = true
/**
* Return no type for MIME type
*/
override fun getType(uri: Uri) = null
/**
* query() always returns no results
*/
override fun query(
uri: Uri,
projection: Array<String>?,
selection: String?,
selectionArgs: Array<String>?,
sortOrder: String?) = null
/**
* insert() always returns null (no URI)
*/
override fun insert(uri: Uri, values: ContentValues?) = null
/**
* delete() always returns "no rows affected" (0)
*/
override fun delete(uri: Uri, selection: String?, selectionArgs: Array<String>?) = 0
/**
* update() always returns "no rows affected" (0)
*/
override fun update(
uri: Uri,
values: ContentValues?,
selection: String?,
selectionArgs: Array<String>?) = 0
companion object {
const val AUTHORITY = "ch.dissem.apps.abit.provider"
}
}

190
app/src/main/java/ch/dissem/apps/abit/synchronization/SyncAdapter.java
View File

@ -1,190 +0,0 @@
/*
* Copyright 2016 Christian Basler
*
* 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 ch.dissem.apps.abit.synchronization;
import android.accounts.Account;
import android.accounts.AccountManager;
import android.content.AbstractThreadedSyncAdapter;
import android.content.ContentProviderClient;
import android.content.ContentResolver;
import android.content.Context;
import android.content.SyncResult;
import android.os.Bundle;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.util.List;
import ch.dissem.apps.abit.service.Singleton;
import ch.dissem.apps.abit.util.Preferences;
import ch.dissem.bitmessage.BitmessageContext;
import ch.dissem.bitmessage.entity.BitmessageAddress;
import ch.dissem.bitmessage.entity.CustomMessage;
import ch.dissem.bitmessage.exception.DecryptionFailedException;
import ch.dissem.bitmessage.extensions.CryptoCustomMessage;
import ch.dissem.bitmessage.extensions.pow.ProofOfWorkRequest;
import ch.dissem.bitmessage.ports.ProofOfWorkRepository;
import static ch.dissem.apps.abit.synchronization.Authenticator.ACCOUNT_POW;
import static ch.dissem.apps.abit.synchronization.Authenticator.ACCOUNT_SYNC;
import static ch.dissem.apps.abit.synchronization.StubProvider.AUTHORITY;
import static ch.dissem.bitmessage.extensions.pow.ProofOfWorkRequest.Request.CALCULATE;
import static ch.dissem.bitmessage.extensions.pow.ProofOfWorkRequest.Request.COMPLETE;
import static ch.dissem.bitmessage.utils.Singleton.cryptography;
/**
* Sync Adapter to synchronize with the Bitmessage network - fetches
* new objects and then disconnects.
*/
public class SyncAdapter extends AbstractThreadedSyncAdapter {
private final static Logger LOG = LoggerFactory.getLogger(SyncAdapter.class);
private static final long SYNC_FREQUENCY = 15 * 60; // seconds
private final BitmessageContext bmc;
/**
* Set up the sync adapter
*/
public SyncAdapter(Context context, boolean autoInitialize) {
super(context, autoInitialize);
bmc = Singleton.getBitmessageContext(context);
}
@Override
public void onPerformSync(Account account, Bundle extras, String authority,
ContentProviderClient provider, SyncResult syncResult) {
try {
if (account.equals(ACCOUNT_SYNC)) {
if (Preferences.isConnectionAllowed(getContext())) {
syncData();
}
} else if (account.equals(ACCOUNT_POW)) {
syncPOW();
} else {
syncResult.stats.numAuthExceptions++;
}
} catch (IOException e) {
syncResult.stats.numIoExceptions++;
} catch (DecryptionFailedException e) {
syncResult.stats.numAuthExceptions++;
}
}
private void syncData() throws IOException {
// If the Bitmessage context acts as a full node, synchronization isn't necessary
if (bmc.isRunning()) {
LOG.info("Synchronization skipped, Abit is acting as a full node");
return;
}
LOG.info("Synchronizing Bitmessage");
LOG.info("Synchronization started");
bmc.synchronize(
Preferences.getTrustedNode(getContext()),
Preferences.getTrustedNodePort(getContext()),
Preferences.getTimeoutInSeconds(getContext()),
true
);
LOG.info("Synchronization finished");
}
private void syncPOW() throws IOException, DecryptionFailedException {
// If the Bitmessage context acts as a full node, synchronization isn't necessary
LOG.info("Looking for completed POW");
BitmessageAddress identity = Singleton.getIdentity(getContext());
@SuppressWarnings("ConstantConditions")
byte[] privateKey = identity.getPrivateKey().getPrivateEncryptionKey();
byte[] signingKey = cryptography().createPublicKey(identity.getPublicDecryptionKey());
ProofOfWorkRequest.Reader reader = new ProofOfWorkRequest.Reader(identity);
ProofOfWorkRepository powRepo = Singleton.getProofOfWorkRepository(getContext());
List<byte[]> items = powRepo.getItems();
for (byte[] initialHash : items) {
ProofOfWorkRepository.Item item = powRepo.getItem(initialHash);
byte[] target = cryptography().getProofOfWorkTarget(item.getObjectMessage(), item.getNonceTrialsPerByte(), item.getExtraBytes());
CryptoCustomMessage<ProofOfWorkRequest> cryptoMsg = new CryptoCustomMessage<>(
new ProofOfWorkRequest(identity, initialHash, CALCULATE, target));
cryptoMsg.signAndEncrypt(identity, signingKey);
CustomMessage response = bmc.send(
Preferences.getTrustedNode(getContext()),
Preferences.getTrustedNodePort(getContext()),
cryptoMsg
);
if (response.isError()) {
LOG.error("Server responded with error: " + new String(response.getData(),
"UTF-8"));
} else {
ProofOfWorkRequest decryptedResponse = CryptoCustomMessage.read(
response, reader).decrypt(privateKey);
if (decryptedResponse.getRequest() == COMPLETE) {
bmc.internals().getProofOfWorkService().onNonceCalculated(
initialHash, decryptedResponse.getData());
}
}
}
if (items.size() == 0) {
stopPowSync(getContext());
}
LOG.info("Synchronization finished");
}
public static void startSync(Context ctx) {
// Create account, if it's missing. (Either first run, or user has deleted account.)
Account account = addAccount(ctx, ACCOUNT_SYNC);
// Recommend a schedule for automatic synchronization. The system may modify this based
// on other scheduled syncs and network utilization.
ContentResolver.addPeriodicSync(account, AUTHORITY, new Bundle(), SYNC_FREQUENCY);
}
public static void stopSync(Context ctx) {
// Create account, if it's missing. (Either first run, or user has deleted account.)
Account account = addAccount(ctx, ACCOUNT_SYNC);
ContentResolver.removePeriodicSync(account, AUTHORITY, new Bundle());
}
public static void startPowSync(Context ctx) {
// Create account, if it's missing. (Either first run, or user has deleted account.)
Account account = addAccount(ctx, ACCOUNT_POW);
// Recommend a schedule for automatic synchronization. The system may modify this based
// on other scheduled syncs and network utilization.
ContentResolver.addPeriodicSync(account, AUTHORITY, new Bundle(), SYNC_FREQUENCY);
}
public static void stopPowSync(Context ctx) {
// Create account, if it's missing. (Either first run, or user has deleted account.)
Account account = addAccount(ctx, ACCOUNT_POW);
ContentResolver.removePeriodicSync(account, AUTHORITY, new Bundle());
}
private static Account addAccount(Context ctx, Account account) {
if (AccountManager.get(ctx).addAccountExplicitly(account, null, null)) {
// Inform the system that this account supports sync
ContentResolver.setIsSyncable(account, AUTHORITY, 1);
// Inform the system that this account is eligible for auto sync when the network is up
ContentResolver.setSyncAutomatically(account, AUTHORITY, true);
}
return account;
}
}

189
app/src/main/java/ch/dissem/apps/abit/synchronization/SyncAdapter.kt Normal file
View File

@ -0,0 +1,189 @@
/*
* Copyright 2016 Christian Basler
*
* 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 ch.dissem.apps.abit.synchronization
import android.accounts.Account
import android.accounts.AccountManager
import android.content.*
import android.os.Bundle
import ch.dissem.apps.abit.service.Singleton
import ch.dissem.apps.abit.synchronization.Authenticator.Companion.ACCOUNT_POW
import ch.dissem.apps.abit.synchronization.Authenticator.Companion.ACCOUNT_SYNC
import ch.dissem.apps.abit.synchronization.StubProvider.Companion.AUTHORITY
import ch.dissem.apps.abit.util.Preferences
import ch.dissem.bitmessage.exception.DecryptionFailedException
import ch.dissem.bitmessage.extensions.CryptoCustomMessage
import ch.dissem.bitmessage.extensions.pow.ProofOfWorkRequest
import ch.dissem.bitmessage.extensions.pow.ProofOfWorkRequest.Request.CALCULATE
import ch.dissem.bitmessage.extensions.pow.ProofOfWorkRequest.Request.COMPLETE
import ch.dissem.bitmessage.utils.Singleton.cryptography
import org.slf4j.LoggerFactory
import java.io.IOException
/**
* Sync Adapter to synchronize with the Bitmessage network - fetches
* new objects and then disconnects.
*/
class SyncAdapter(context: Context, autoInitialize: Boolean) : AbstractThreadedSyncAdapter(context, autoInitialize) {
private val bmc = Singleton.getBitmessageContext(context)
override fun onPerformSync(
account: Account,
extras: Bundle,
authority: String,
provider: ContentProviderClient,
syncResult: SyncResult
) {
try {
if (account == ACCOUNT_SYNC) {
if (Preferences.isConnectionAllowed(context)) {
syncData()
}
} else if (account == ACCOUNT_POW) {
syncPOW()
} else {
syncResult.stats.numAuthExceptions++
}
} catch (e: IOException) {
syncResult.stats.numIoExceptions++
} catch (e: DecryptionFailedException) {
syncResult.stats.numAuthExceptions++
}
}
private fun syncData() {
// If the Bitmessage context acts as a full node, synchronization isn't necessary
if (bmc.isRunning()) {
LOG.info("Synchronization skipped, Abit is acting as a full node")
return
}
val trustedNode = Preferences.getTrustedNode(context)
if (trustedNode == null) {
LOG.info("Trusted node not available, disabling synchronization")
stopSync(context)
return
}
LOG.info("Synchronization started")
bmc.synchronize(
trustedNode,
Preferences.getTrustedNodePort(context),
Preferences.getTimeoutInSeconds(context),
true
)
LOG.info("Synchronization finished")
}
private fun syncPOW() {
val identity = Singleton.getIdentity(context)
if (identity == null) {
LOG.info("No identity available - skipping POW synchronization")
return
}
val trustedNode = Preferences.getTrustedNode(context)
if (trustedNode == null) {
LOG.info("Trusted node not available, disabling POW synchronization")
stopPowSync(context)
return
}
// If the Bitmessage context acts as a full node, synchronization isn't necessary
LOG.info("Looking for completed POW")
val privateKey = identity.privateKey!!.privateEncryptionKey
val signingKey = cryptography().createPublicKey(identity.publicDecryptionKey)
val reader = ProofOfWorkRequest.Reader(identity)
val powRepo = Singleton.getProofOfWorkRepository(context)
val items = powRepo.getItems()
for (initialHash in items) {
val (objectMessage, nonceTrialsPerByte, extraBytes) = powRepo.getItem(initialHash)
val target = cryptography().getProofOfWorkTarget(objectMessage, nonceTrialsPerByte, extraBytes)
val cryptoMsg = CryptoCustomMessage(
ProofOfWorkRequest(identity, initialHash, CALCULATE, target))
cryptoMsg.signAndEncrypt(identity, signingKey)
val response = bmc.send(
trustedNode,
Preferences.getTrustedNodePort(context),
cryptoMsg
)
if (response.isError) {
LOG.error("Server responded with error: ${String(response.getData())}")
} else {
val (_, _, request, data) = CryptoCustomMessage.read(response, reader).decrypt(privateKey)
if (request == COMPLETE) {
bmc.internals.proofOfWorkService.onNonceCalculated(initialHash, data)
}
}
}
if (items.isEmpty()) {
stopPowSync(context)
}
LOG.info("Synchronization finished")
}
companion object {
private val LOG = LoggerFactory.getLogger(SyncAdapter::class.java)
private const val SYNC_FREQUENCY = 15 * 60L // seconds
@JvmStatic
fun startSync(ctx: Context) {
// Create account, if it's missing. (Either first run, or user has deleted account.)
val account = addAccount(ctx, ACCOUNT_SYNC)
// Recommend a schedule for automatic synchronization. The system may modify this based
// on other scheduled syncs and network utilization.
ContentResolver.addPeriodicSync(account, AUTHORITY, Bundle(), SYNC_FREQUENCY)
}
@JvmStatic
fun stopSync(ctx: Context) {
// Create account, if it's missing. (Either first run, or user has deleted account.)
val account = addAccount(ctx, ACCOUNT_SYNC)
ContentResolver.removePeriodicSync(account, AUTHORITY, Bundle())
}
@JvmStatic
fun startPowSync(ctx: Context) {
// Create account, if it's missing. (Either first run, or user has deleted account.)
val account = addAccount(ctx, ACCOUNT_POW)
// Recommend a schedule for automatic synchronization. The system may modify this based
// on other scheduled syncs and network utilization.
ContentResolver.addPeriodicSync(account, AUTHORITY, Bundle(), SYNC_FREQUENCY)
}
@JvmStatic
fun stopPowSync(ctx: Context) {
// Create account, if it's missing. (Either first run, or user has deleted account.)
val account = addAccount(ctx, ACCOUNT_POW)
ContentResolver.removePeriodicSync(account, AUTHORITY, Bundle())
}
private fun addAccount(ctx: Context, account: Account): Account {
if (AccountManager.get(ctx).addAccountExplicitly(account, null, null)) {
// Inform the system that this account supports sync
ContentResolver.setIsSyncable(account, AUTHORITY, 1)
// Inform the system that this account is eligible for auto sync when the network is up
ContentResolver.setSyncAutomatically(account, AUTHORITY, true)
}
return account
}
}
}

65
app/src/main/java/ch/dissem/apps/abit/synchronization/SyncService.java
View File

@ -1,65 +0,0 @@
/*
* Copyright 2016 Christian Basler
*
* 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 ch.dissem.apps.abit.synchronization;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
/**
* Define a Service that returns an IBinder for the
* sync adapter class, allowing the sync adapter framework to call
* onPerformSync().
*/
public class SyncService extends Service {
// Storage for an instance of the sync adapter
private static SyncAdapter syncAdapter = null;
// Object to use as a thread-safe lock
private static final Object syncAdapterLock = new Object();
/**
* Instantiate the sync adapter object.
*/
@Override
public void onCreate() {
/*
* Create the sync adapter as a singleton.
* Set the sync adapter as syncable
* Disallow parallel syncs
*/
synchronized (syncAdapterLock) {
if (syncAdapter == null) {
syncAdapter = new SyncAdapter(this, true);
}
}
}
/**
* Return an object that allows the system to invoke
* the sync adapter.
*/
@Override
public IBinder onBind(Intent intent) {
/*
* Get the object that allows external processes
* to call onPerformSync(). The object is created
* in the base class code when the SyncAdapter
* constructors call super()
*/
return syncAdapter.getSyncAdapterBinder();
}
}

62
app/src/main/java/ch/dissem/apps/abit/synchronization/SyncService.kt Normal file
View File

@ -0,0 +1,62 @@
/*
* Copyright 2016 Christian Basler
*
* 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 ch.dissem.apps.abit.synchronization
import android.app.Service
import android.content.Intent
import android.os.IBinder
/**
* Define a Service that returns an IBinder for the
* sync adapter class, allowing the sync adapter framework to call
* onPerformSync().
*/
class SyncService : Service() {
/**
* Instantiate the sync adapter object.
*/
override fun onCreate() {
// Create the sync adapter as a singleton.
// Set the sync adapter as syncable
// Disallow parallel syncs
synchronized(syncAdapterLock) {
if (syncAdapter == null) {
syncAdapter = SyncAdapter(this, true)
}
}
}
/**
* Return an object that allows the system to invoke
* the sync adapter.
*/
override fun onBind(intent: Intent): IBinder? {
// Get the object that allows external processes
// to call onPerformSync(). The object is created
// in the base class code when the SyncAdapter
// constructors call super()
return syncAdapter?.syncAdapterBinder
}
companion object {
// Storage for an instance of the sync adapter
private var syncAdapter: SyncAdapter? = null
// Object to use as a thread-safe lock
private val syncAdapterLock = Any()
}
}

114
app/src/main/java/ch/dissem/apps/abit/util/Preferences.java
View File

@ -1,114 +0,0 @@
/*
* Copyright 2016 Christian Basler
*
* 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 ch.dissem.apps.abit.util;
import android.content.Context;
import android.content.SharedPreferences;
import android.preference.PreferenceManager;
import java.io.IOException;
import java.net.InetAddress;
import ch.dissem.apps.abit.R;
import ch.dissem.apps.abit.listener.WifiReceiver;
import ch.dissem.apps.abit.notification.ErrorNotification;
import static ch.dissem.apps.abit.util.Constants.PREFERENCE_FULL_NODE;
import static ch.dissem.apps.abit.util.Constants.PREFERENCE_SYNC_TIMEOUT;
import static ch.dissem.apps.abit.util.Constants.PREFERENCE_TRUSTED_NODE;
import static ch.dissem.apps.abit.util.Constants.PREFERENCE_WIFI_ONLY;
/**
* @author Christian Basler
*/
public class Preferences {
public static boolean useTrustedNode(Context ctx) {
String trustedNode = getPreference(ctx, PREFERENCE_TRUSTED_NODE);
return trustedNode != null && !trustedNode.trim().isEmpty();
}
/**
* Warning, this method might do a network call and therefore can't be called from
* the UI thread.
*/
public static InetAddress getTrustedNode(Context ctx) throws IOException {
String trustedNode = getPreference(ctx, PREFERENCE_TRUSTED_NODE);
if (trustedNode == null) return null;
trustedNode = trustedNode.trim();
if (trustedNode.isEmpty()) return null;
if (trustedNode.matches("^(?![0-9a-fA-F]*:[0-9a-fA-F]*:).*(:[0-9]+)$")) {
int index = trustedNode.lastIndexOf(':');
trustedNode = trustedNode.substring(0, index);
}
return InetAddress.getByName(trustedNode);
}
public static int getTrustedNodePort(Context ctx) {
String trustedNode = getPreference(ctx, PREFERENCE_TRUSTED_NODE);
if (trustedNode == null) return 8444;
trustedNode = trustedNode.trim();
if (trustedNode.matches("^(?![0-9a-fA-F]*:[0-9a-fA-F]*:).*(:[0-9]+)$")) {
int index = trustedNode.lastIndexOf(':');
String portString = trustedNode.substring(index + 1);
try {
return Integer.parseInt(portString);
} catch (NumberFormatException e) {
new ErrorNotification(ctx)
.setError(R.string.error_invalid_sync_port, portString)
.show();
}
}
return 8444;
}
public static long getTimeoutInSeconds(Context ctx) {
String preference = getPreference(ctx, PREFERENCE_SYNC_TIMEOUT);
return preference == null ? 120 : Long.parseLong(preference);
}
private static String getPreference(Context ctx, String name) {
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(ctx);
return preferences.getString(name, null);
}
public static boolean isConnectionAllowed(Context ctx) {
return !isWifiOnly(ctx) || !WifiReceiver.isConnectedToMeteredNetwork(ctx);
}
public static boolean isWifiOnly(Context ctx) {
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(ctx);
return preferences.getBoolean(PREFERENCE_WIFI_ONLY, true);
}
public static void setWifiOnly(Context ctx, boolean status) {
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(ctx);
preferences.edit().putBoolean(PREFERENCE_WIFI_ONLY, status).apply();
}
public static boolean isFullNodeActive(Context ctx) {
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(ctx);
return preferences.getBoolean(PREFERENCE_FULL_NODE, false);
}
public static void setFullNodeActive(Context ctx, boolean status) {
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(ctx);
preferences.edit().putBoolean(PREFERENCE_FULL_NODE, status).apply();
}
}

115
app/src/main/java/ch/dissem/apps/abit/util/Preferences.kt Normal file
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@ -0,0 +1,115 @@
/*
* Copyright 2016 Christian Basler
*
* 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 ch.dissem.apps.abit.util
import android.content.Context
import android.preference.PreferenceManager
import ch.dissem.apps.abit.R
import ch.dissem.apps.abit.listener.WifiReceiver
import ch.dissem.apps.abit.notification.ErrorNotification
import ch.dissem.apps.abit.util.Constants.*
import java.io.IOException
import java.net.InetAddress
/**
* @author Christian Basler
*/
object Preferences {
@JvmStatic
fun useTrustedNode(ctx: Context): Boolean {
val trustedNode = getPreference(ctx, PREFERENCE_TRUSTED_NODE) ?: return false
return trustedNode.trim { it <= ' ' }.isNotEmpty()
}
/**
* Warning, this method might do a network call and therefore can't be called from
* the UI thread.
*/
@JvmStatic
@Throws(IOException::class)
fun getTrustedNode(ctx: Context): InetAddress? {
var trustedNode: String = getPreference(ctx, PREFERENCE_TRUSTED_NODE) ?: return null
trustedNode = trustedNode.trim { it <= ' ' }
if (trustedNode.isEmpty()) return null
if (trustedNode.matches("^(?![0-9a-fA-F]*:[0-9a-fA-F]*:).*(:[0-9]+)$".toRegex())) {
val index = trustedNode.lastIndexOf(':')
trustedNode = trustedNode.substring(0, index)
}
return InetAddress.getByName(trustedNode)
}
@JvmStatic
fun getTrustedNodePort(ctx: Context): Int {
var trustedNode: String = getPreference(ctx, PREFERENCE_TRUSTED_NODE) ?: return 8444
trustedNode = trustedNode.trim { it <= ' ' }
if (trustedNode.matches("^(?![0-9a-fA-F]*:[0-9a-fA-F]*:).*(:[0-9]+)$".toRegex())) {
val index = trustedNode.lastIndexOf(':')
val portString = trustedNode.substring(index + 1)
try {
return Integer.parseInt(portString)
} catch (e: NumberFormatException) {
ErrorNotification(ctx)
.setError(R.string.error_invalid_sync_port, portString)
.show()
}
}
return 8444
}
@JvmStatic
fun getTimeoutInSeconds(ctx: Context): Long {
val preference = getPreference(ctx, PREFERENCE_SYNC_TIMEOUT) ?: return 120
return preference.toLong()
}
private fun getPreference(ctx: Context, name: String): String? {
val preferences = PreferenceManager.getDefaultSharedPreferences(ctx)
return preferences.getString(name, null)
}
@JvmStatic
fun isConnectionAllowed(ctx: Context): Boolean {
return !isWifiOnly(ctx) || !WifiReceiver.isConnectedToMeteredNetwork(ctx)
}
@JvmStatic
fun isWifiOnly(ctx: Context): Boolean {
val preferences = PreferenceManager.getDefaultSharedPreferences(ctx)
return preferences.getBoolean(PREFERENCE_WIFI_ONLY, true)
}
@JvmStatic
fun setWifiOnly(ctx: Context, status: Boolean) {
val preferences = PreferenceManager.getDefaultSharedPreferences(ctx)
preferences.edit().putBoolean(PREFERENCE_WIFI_ONLY, status).apply()
}
@JvmStatic
fun isFullNodeActive(ctx: Context): Boolean {
val preferences = PreferenceManager.getDefaultSharedPreferences(ctx)
return preferences.getBoolean(PREFERENCE_FULL_NODE, false)
}
@JvmStatic
fun setFullNodeActive(ctx: Context, status: Boolean) {
val preferences = PreferenceManager.getDefaultSharedPreferences(ctx)
preferences.edit().putBoolean(PREFERENCE_FULL_NODE, status).apply()
}
}

2
build.gradle
View File

@ -5,11 +5,13 @@ configurations.all {
} }
buildscript { buildscript {
ext.kotlin_version = '1.1.3-2'
repositories { repositories {
jcenter() jcenter()
} }
dependencies { dependencies {
classpath 'com.android.tools.build:gradle:2.3.3' classpath 'com.android.tools.build:gradle:2.3.3'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
classpath 'com.github.ben-manes:gradle-versions-plugin:0.15.0' classpath 'com.github.ben-manes:gradle-versions-plugin:0.15.0'
// NOTE: Do not place your application dependencies here; they belong // NOTE: Do not place your application dependencies here; they belong