bitmessage/Abit
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Code Issues Pull Requests Releases Wiki Activity

Added a service based POW engine, so it shouldn't be killed by the system, at least not that easily. (WIP)

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This commit is contained in:
Christian Basler 2015-10-31 07:49:03 +01:00
parent e98eefe2cc
commit 54a319638b
14 changed files with 266 additions and 85 deletions
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3
app/src/main/AndroidManifest.xml
View File

@ -102,7 +102,8 @@
<category android:name="android.intent.category.BROWSABLE" />
</intent-filter>
</activity>
<service android:name=".synchronization.BitmessageService" />
<service android:name=".service.BitmessageService" />
<service android:name=".service.ProofOfWorkService" />
<!-- Synchronization -->
<provider

43
app/src/main/java/ch/dissem/apps/abit/MessageListActivity.java
View File

@ -40,22 +40,23 @@ import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.Serializable;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import ch.dissem.apps.abit.listener.ActionBarListener;
import ch.dissem.apps.abit.listener.ListSelectionListener;
import ch.dissem.apps.abit.service.BitmessageService;
import ch.dissem.apps.abit.service.Singleton;
import ch.dissem.apps.abit.synchronization.Authenticator;
import ch.dissem.apps.abit.synchronization.BitmessageService;
import ch.dissem.bitmessage.entity.BitmessageAddress;
import ch.dissem.bitmessage.entity.Plaintext;
import ch.dissem.bitmessage.entity.valueobject.Label;
import ch.dissem.bitmessage.ports.AddressRepository;
import ch.dissem.bitmessage.ports.MessageRepository;
import static ch.dissem.apps.abit.synchronization.BitmessageService.DATA_FIELD_IDENTITY;
import static ch.dissem.apps.abit.synchronization.BitmessageService.MSG_START_NODE;
import static ch.dissem.apps.abit.synchronization.BitmessageService.MSG_STOP_NODE;
import static ch.dissem.apps.abit.service.BitmessageService.DATA_FIELD_IDENTITY;
import static ch.dissem.apps.abit.service.BitmessageService.MSG_START_NODE;
import static ch.dissem.apps.abit.service.BitmessageService.MSG_STOP_NODE;
import static ch.dissem.apps.abit.synchronization.StubProvider.AUTHORITY;
@ -82,7 +83,7 @@ public class MessageListActivity extends AppCompatActivity
public static final String ACTION_SHOW_INBOX = "ch.dissem.abit.ShowInbox";
private static final Logger LOG = LoggerFactory.getLogger(MessageListActivity.class);
private static final long SYNC_FREQUENCY = 15;// FIXME * 60; // seconds
private static final long SYNC_FREQUENCY = 15 * 60; // seconds
private static final int ADD_IDENTITY = 1;
/**
@ -91,14 +92,15 @@ public class MessageListActivity extends AppCompatActivity
*/
private boolean twoPane;
private Messenger messenger = new Messenger(new IncomingHandler());
private Messenger service;
private boolean bound;
private ServiceConnection connection = new ServiceConnection() {
private static IncomingHandler incomingHandler = new IncomingHandler();
private static Messenger messenger = new Messenger(incomingHandler);
private static Messenger service;
private static boolean bound;
private static ServiceConnection connection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
MessageListActivity.this.service = new Messenger(service);
MessageListActivity.this.bound = true;
MessageListActivity.service = new Messenger(service);
MessageListActivity.bound = true;
}
@Override
@ -108,7 +110,6 @@ public class MessageListActivity extends AppCompatActivity
}
};
private AccountHeader accountHeader;
private Label selectedLabel;
private MessageRepository messageRepo;
@ -208,7 +209,7 @@ public class MessageListActivity extends AppCompatActivity
.withIcon(GoogleMaterial.Icon.gmd_settings)
);
// Create the AccountHeader
accountHeader = new AccountHeaderBuilder()
AccountHeader accountHeader = new AccountHeaderBuilder()
.withActivity(this)
.withHeaderBackground(R.drawable.header)
.withProfiles(profiles)
@ -229,6 +230,7 @@ public class MessageListActivity extends AppCompatActivity
}
})
.build();
incomingHandler.updateAccountHeader(accountHeader);
ArrayList<IDrawerItem> drawerItems = new ArrayList<>();
for (Label label : messageRepo.getLabels()) {
@ -414,11 +416,24 @@ public class MessageListActivity extends AppCompatActivity
super.onStop();
}
private class IncomingHandler extends Handler {
private static class IncomingHandler extends Handler {
private WeakReference<AccountHeader> accountHeaderRef;
private IncomingHandler() {
accountHeaderRef = new WeakReference<>(null);
}
public void updateAccountHeader(AccountHeader accountHeader){
accountHeaderRef = new WeakReference<>(accountHeader);
}
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case BitmessageService.MSG_CREATE_IDENTITY: {
AccountHeader accountHeader = accountHeaderRef.get();
if (accountHeader == null) break;
Serializable data = msg.getData().getSerializable(DATA_FIELD_IDENTITY);
if (data instanceof BitmessageAddress) {
BitmessageAddress identity = (BitmessageAddress) data;

10
app/src/main/java/ch/dissem/apps/abit/OpenBitmessageLinkActivity.java
View File

@ -37,13 +37,13 @@ import android.widget.TextView;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import ch.dissem.apps.abit.synchronization.BitmessageService;
import ch.dissem.apps.abit.service.BitmessageService;
import ch.dissem.bitmessage.entity.BitmessageAddress;
import static ch.dissem.apps.abit.synchronization.BitmessageService.DATA_FIELD_ADDRESS;
import static ch.dissem.apps.abit.synchronization.BitmessageService.MSG_ADD_CONTACT;
import static ch.dissem.apps.abit.synchronization.BitmessageService.MSG_SUBSCRIBE;
import static ch.dissem.apps.abit.synchronization.BitmessageService.MSG_SUBSCRIBE_AND_ADD_CONTACT;
import static ch.dissem.apps.abit.service.BitmessageService.DATA_FIELD_ADDRESS;
import static ch.dissem.apps.abit.service.BitmessageService.MSG_ADD_CONTACT;
import static ch.dissem.apps.abit.service.BitmessageService.MSG_SUBSCRIBE;
import static ch.dissem.apps.abit.service.BitmessageService.MSG_SUBSCRIBE_AND_ADD_CONTACT;
public class OpenBitmessageLinkActivity extends AppCompatActivity {
private static final Logger LOG = LoggerFactory.getLogger(OpenBitmessageLinkActivity.class);

6
app/src/main/java/ch/dissem/apps/abit/notification/AbstractNotification.java
View File

@ -14,7 +14,7 @@ public abstract class AbstractNotification {
public AbstractNotification(Context ctx) {
this.ctx = ctx;
this.ctx = ctx.getApplicationContext();
this.manager = (NotificationManager) ctx.getSystemService(Context.NOTIFICATION_SERVICE);
}
@ -23,6 +23,10 @@ public abstract class AbstractNotification {
*/
protected abstract int getNotificationId();
public Notification getNotification() {
return notification;
}
public void show() {
manager.notify(getNotificationId(), notification);
}

5
app/src/main/java/ch/dissem/apps/abit/notification/ErrorNotification.java
View File

@ -1,6 +1,7 @@
package ch.dissem.apps.abit.notification;
import android.content.Context;
import android.support.annotation.StringRes;
import android.support.v7.app.NotificationCompat;
import ch.dissem.apps.abit.R;
@ -20,14 +21,14 @@ public class ErrorNotification extends AbstractNotification {
.setVisibility(NotificationCompat.VISIBILITY_PUBLIC);
}
public ErrorNotification setWarning(int resId, Object... args) {
public ErrorNotification setWarning(@StringRes int resId, Object... args) {
builder.setSmallIcon(R.drawable.ic_notification_warning)
.setContentText(ctx.getString(resId, args));
notification = builder.build();
return this;
}
public ErrorNotification setError(int resId, Object... args) {
public ErrorNotification setError(@StringRes int resId, Object... args) {
builder.setSmallIcon(R.drawable.ic_notification_error)
.setContentText(ctx.getString(resId, args));
notification = builder.build();

4
app/src/main/java/ch/dissem/apps/abit/notification/NetworkNotification.java
View File

@ -12,7 +12,6 @@ import java.util.TimerTask;
import ch.dissem.apps.abit.MessageListActivity;
import ch.dissem.apps.abit.R;
import ch.dissem.apps.abit.service.Singleton;
import ch.dissem.bitmessage.BitmessageContext;
import ch.dissem.bitmessage.utils.Property;
@ -26,7 +25,7 @@ public class NetworkNotification extends AbstractNotification {
private NotificationCompat.Builder builder;
public NetworkNotification(Context ctx, BitmessageContext bmc) {
super(ctx.getApplicationContext());
super(ctx);
this.bmc = bmc;
builder = new NotificationCompat.Builder(ctx);
builder.setSmallIcon(R.drawable.ic_notification_full_node)
@ -34,6 +33,7 @@ public class NetworkNotification extends AbstractNotification {
.setVisibility(NotificationCompat.VISIBILITY_PUBLIC);
}
@Override
public Notification getNotification() {
update();
return notification;

38
app/src/main/java/ch/dissem/apps/abit/notification/ProofOfWorkNotification.java Normal file
View File

@ -0,0 +1,38 @@
package ch.dissem.apps.abit.notification;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.support.v7.app.NotificationCompat;
import ch.dissem.apps.abit.MessageListActivity;
import ch.dissem.apps.abit.R;
/**
* Ongoing notification while proof of work is in progress.
*/
public class ProofOfWorkNotification extends AbstractNotification {
public static final int ONGOING_NOTIFICATION_ID = 3;
public ProofOfWorkNotification(Context ctx) {
super(ctx);
NotificationCompat.Builder builder = new NotificationCompat.Builder(ctx);
Intent showMessageIntent = new Intent(ctx, MessageListActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(ctx, 0, showMessageIntent, PendingIntent.FLAG_UPDATE_CURRENT);
builder.setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
.setUsesChronometer(true)
.setSmallIcon(R.drawable.ic_notification_proof_of_work)
.setContentTitle(ctx.getString(R.string.proof_of_work_title))
.setContentText(ctx.getString(R.string.proof_of_work_text))
.setContentIntent(pendingIntent);
notification = builder.build();
}
@Override
protected int getNotificationId() {
return ONGOING_NOTIFICATION_ID;
}
}

66
app/src/main/java/ch/dissem/apps/abit/synchronization/BitmessageService.java → app/src/main/java/ch/dissem/apps/abit/service/BitmessageService.java
View File

@ -1,25 +1,21 @@
package ch.dissem.apps.abit.synchronization;
package ch.dissem.apps.abit.service;
import android.app.Service;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.os.Messenger;
import android.os.RemoteException;
import android.preference.PreferenceManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.Serializable;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.lang.ref.WeakReference;
import ch.dissem.apps.abit.notification.NetworkNotification;
import ch.dissem.apps.abit.service.Singleton;
import ch.dissem.bitmessage.BitmessageContext;
import ch.dissem.bitmessage.entity.BitmessageAddress;
@ -33,7 +29,6 @@ import static ch.dissem.apps.abit.notification.NetworkNotification.ONGOING_NOTIF
public class BitmessageService extends Service {
public static final Logger LOG = LoggerFactory.getLogger(BitmessageService.class);
public static final int MSG_SYNC = 2;
public static final int MSG_CREATE_IDENTITY = 10;
public static final int MSG_SUBSCRIBE = 20;
public static final int MSG_ADD_CONTACT = 21;
@ -68,7 +63,7 @@ public class BitmessageService extends Service {
if (bmc == null) {
bmc = Singleton.getBitmessageContext(this);
notification = new NetworkNotification(this, bmc);
messenger = new Messenger(new IncomingHandler());
messenger = new Messenger(new IncomingHandler(this));
}
}
}
@ -93,7 +88,13 @@ public class BitmessageService extends Service {
return messenger.getBinder();
}
private class IncomingHandler extends Handler {
private static class IncomingHandler extends Handler {
private WeakReference<BitmessageService> service;
private IncomingHandler(BitmessageService service) {
this.service = new WeakReference<>(service);
}
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
@ -119,45 +120,6 @@ public class BitmessageService extends Service {
}
break;
}
case MSG_SYNC: {
LOG.info("Synchronizing Bitmessage");
// If the Bitmessage context acts as a full node, synchronization isn't necessary
if (bmc.isRunning()) break;
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(
BitmessageService.this);
String trustedNode = preferences.getString("trusted_node", null);
if (trustedNode == null) break;
trustedNode = trustedNode.trim();
if (trustedNode.isEmpty()) break;
int port;
if (trustedNode.matches("^(?![0-9a-fA-F]*:[0-9a-fA-F]*:).*(:[0-9]+)$")) {
int index = trustedNode.lastIndexOf(':');
String portString = trustedNode.substring(index + 1);
trustedNode = trustedNode.substring(0, index);
try {
port = Integer.parseInt(portString);
} catch (NumberFormatException e) {
LOG.error("Invalid port " + portString);
// TODO: show error as notification
return;
}
} else {
port = 8444;
}
long timeoutInSeconds = preferences.getInt("sync_timeout", 120);
try {
LOG.info("Synchronization started");
bmc.synchronize(InetAddress.getByName(trustedNode), port, timeoutInSeconds, true);
LOG.info("Synchronization finished");
} catch (UnknownHostException e) {
LOG.error("Couldn't synchronize", e);
// TODO: show error as notification
}
break;
}
case MSG_SEND_MESSAGE: {
Serializable identity = msg.getData().getSerializable(DATA_FIELD_IDENTITY);
Serializable address = msg.getData().getSerializable(DATA_FIELD_ADDRESS);
@ -182,17 +144,17 @@ public class BitmessageService extends Service {
case MSG_START_NODE:
// TODO: warn user, option to restrict to WiFi
// (I'm not quite sure this can be done here, though)
startService(new Intent(BitmessageService.this, BitmessageService.class));
service.get().startService(new Intent(service.get(), BitmessageService.class));
running = true;
startForeground(ONGOING_NOTIFICATION_ID, notification.getNotification());
service.get().startForeground(ONGOING_NOTIFICATION_ID, notification.getNotification());
bmc.startup();
notification.show();
break;
case MSG_STOP_NODE:
bmc.shutdown();
running = false;
stopForeground(false);
stopService(new Intent(BitmessageService.this, BitmessageService.class));
service.get().stopForeground(false);
service.get().stopSelf();
break;
default:
super.handleMessage(msg);

88
app/src/main/java/ch/dissem/apps/abit/service/ProofOfWorkService.java Normal file
View File

@ -0,0 +1,88 @@
package ch.dissem.apps.abit.service;
import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.support.annotation.Nullable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.lang.ref.WeakReference;
import ch.dissem.apps.abit.notification.ProofOfWorkNotification;
import ch.dissem.bitmessage.ports.MultiThreadedPOWEngine;
import ch.dissem.bitmessage.ports.ProofOfWorkEngine;
import static ch.dissem.apps.abit.notification.ProofOfWorkNotification.ONGOING_NOTIFICATION_ID;
/**
* The Proof of Work Service makes sure POW is done in a foreground process, so it shouldn't be
* killed by the system before the nonce is found.
*/
public class ProofOfWorkService extends Service {
public static final Logger LOG = LoggerFactory.getLogger(ProofOfWorkService.class);
// Object to use as a thread-safe lock
private static final Object lock = new Object();
private static ProofOfWorkEngine engine;
@Override
public void onCreate() {
synchronized (lock) {
if (engine == null) {
engine = new MultiThreadedPOWEngine();
}
}
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return new PowBinder(engine, this);
}
public static class PowBinder extends Binder {
private final ProofOfWorkEngine engine;
private PowBinder(ProofOfWorkEngine engine, ProofOfWorkService service) {
this.engine = new EngineWrapper(engine, service);
}
public ProofOfWorkEngine getEngine() {
return engine;
}
}
private static class EngineWrapper implements ProofOfWorkEngine {
private final ProofOfWorkNotification notification;
private final ProofOfWorkEngine engine;
private final WeakReference<ProofOfWorkService> serviceRef;
private EngineWrapper(ProofOfWorkEngine engine, ProofOfWorkService service) {
this.engine = engine;
this.serviceRef = new WeakReference<>(service);
this.notification = new ProofOfWorkNotification(service);
}
@Override
public void calculateNonce(byte[] initialHash, byte[] target, final Callback callback) {
final ProofOfWorkService service = serviceRef.get();
service.startService(new Intent(service, ProofOfWorkService.class));
service.startForeground(ONGOING_NOTIFICATION_ID, notification.getNotification());
engine.calculateNonce(initialHash, target, new ProofOfWorkEngine.Callback() {
@Override
public void onNonceCalculated(byte[] nonce) {
try {
callback.onNonceCalculated(nonce);
} finally {
service.stopForeground(true);
service.stopSelf();
}
}
});
}
}
}

61
app/src/main/java/ch/dissem/apps/abit/service/ServicePowEngine.java Normal file
View File

@ -0,0 +1,61 @@
package ch.dissem.apps.abit.service;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
import java.util.concurrent.Semaphore;
import ch.dissem.apps.abit.service.ProofOfWorkService.PowBinder;
import ch.dissem.bitmessage.ports.ProofOfWorkEngine;
import static android.content.Context.BIND_AUTO_CREATE;
/**
* Proof of Work engine that uses the Proof of Work service.
*/
public class ServicePowEngine implements ProofOfWorkEngine, ProofOfWorkEngine.Callback {
private final Semaphore semaphore = new Semaphore(1, true);
private final Context ctx;
private byte[] initialHash, targetValue;
private Callback callback;
public ServicePowEngine(Context ctx) {
this.ctx = ctx;
}
private ServiceConnection connection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
((PowBinder) service).getEngine().calculateNonce(initialHash, targetValue, ServicePowEngine.this);
}
@Override
public void onServiceDisconnected(ComponentName name) {
semaphore.release();
}
};
@Override
public void calculateNonce(byte[] initialHash, byte[] targetValue, Callback callback) {
try {
semaphore.acquire();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
this.initialHash = initialHash;
this.targetValue = targetValue;
this.callback = callback;
ctx.bindService(new Intent(ctx, ProofOfWorkService.class), connection, BIND_AUTO_CREATE);
}
@Override
public void onNonceCalculated(byte[] bytes) {
callback.onNonceCalculated(bytes);
ctx.unbindService(connection);
}
}

5
app/src/main/java/ch/dissem/apps/abit/service/Singleton.java
View File

@ -2,9 +2,6 @@ package ch.dissem.apps.abit.service;
import android.content.Context;
import java.util.Objects;
import ch.dissem.apps.abit.MessageListActivity;
import ch.dissem.apps.abit.listener.MessageListener;
import ch.dissem.apps.abit.repository.AndroidAddressRepository;
import ch.dissem.apps.abit.repository.AndroidInventory;
@ -15,7 +12,6 @@ import ch.dissem.bitmessage.networking.DefaultNetworkHandler;
import ch.dissem.bitmessage.ports.AddressRepository;
import ch.dissem.bitmessage.ports.MemoryNodeRegistry;
import ch.dissem.bitmessage.ports.MessageRepository;
import ch.dissem.bitmessage.ports.Security;
import ch.dissem.bitmessage.security.sc.SpongySecurity;
/**
@ -33,6 +29,7 @@ public class Singleton {
final Context ctx = context.getApplicationContext();
SqlHelper sqlHelper = new SqlHelper(ctx);
bitmessageContext = new BitmessageContext.Builder()
.proofOfWorkEngine(new ServicePowEngine(ctx))
.security(new SpongySecurity())
.nodeRegistry(new MemoryNodeRegistry())
.inventory(new AndroidInventory(sqlHelper))

14
app/src/main/java/ch/dissem/apps/abit/synchronization/SyncAdapter.java
View File

@ -15,6 +15,8 @@ import org.slf4j.LoggerFactory;
import java.net.InetAddress;
import java.net.UnknownHostException;
import ch.dissem.apps.abit.R;
import ch.dissem.apps.abit.notification.ErrorNotification;
import ch.dissem.apps.abit.service.Singleton;
import ch.dissem.bitmessage.BitmessageContext;
@ -59,8 +61,9 @@ public class SyncAdapter extends AbstractThreadedSyncAdapter {
try {
port = Integer.parseInt(portString);
} catch (NumberFormatException e) {
LOG.error("Invalid port " + portString);
// TODO: show error as notification
new ErrorNotification(getContext())
.setError(R.string.error_invalid_sync_port, portString)
.show();
return;
}
} else {
@ -72,8 +75,11 @@ public class SyncAdapter extends AbstractThreadedSyncAdapter {
bmc.synchronize(InetAddress.getByName(trustedNode), port, timeoutInSeconds, true);
LOG.info("Synchronization finished");
} catch (UnknownHostException e) {
LOG.error("Couldn't synchronize", e);
// TODO: show error as notification
new ErrorNotification(getContext())
.setError(R.string.error_invalid_sync_host)
.show();
} catch (RuntimeException e) {
LOG.error(e.getMessage(), e);
}
}
}

4
app/src/main/res/values-de/strings.xml
View File

@ -42,4 +42,8 @@
<string name="connection_info_n">Stream %1$d: %2$d Verbindungen</string>
<string name="connection_info_disconnected">Getrennt</string>
<string name="connection_info_pending">Verbindung wird aufgebaut…</string>
<string name="proof_of_work_text">Warnung: dies könnte das Gerät erwärmen bis die Batterie leer ist.</string>
<string name="proof_of_work_title">Proof of Work</string>
<string name="error_invalid_sync_host">Synchronisation fehlgeschlagen: der vertrauenswürdige Knoten konnte nicht erreicht werden.</string>
<string name="error_invalid_sync_port">Ungültiger Port in den Synchronisationseinstellungen: %s</string>
</resources>

4
app/src/main/res/values/strings.xml
View File

@ -42,4 +42,8 @@
<string name="send">Send</string>
<string name="connection_info_disconnected">Disconnected</string>
<string name="connection_info_pending">Connecting…</string>
<string name="proof_of_work_title">Proof of Work</string>
<string name="proof_of_work_text">Warning: This might heat your device until the battery\'s dead.</string>
<string name="error_invalid_sync_port">Invalid port in synchronization settings: %s</string>
<string name="error_invalid_sync_host">Synchronization failed: Trusted node could not be reached.</string>
</resources>