Signal-Android/src/org/thoughtcrime/securesms/jobs/StorageSyncJob.java

229 lines
11 KiB
Java

package org.thoughtcrime.securesms.jobs;
import android.content.Context;
import androidx.annotation.NonNull;
import com.annimon.stream.Stream;
import org.thoughtcrime.securesms.contacts.sync.StorageSyncHelper;
import org.thoughtcrime.securesms.contacts.sync.StorageSyncHelper.KeyDifferenceResult;
import org.thoughtcrime.securesms.contacts.sync.StorageSyncHelper.LocalWriteResult;
import org.thoughtcrime.securesms.contacts.sync.StorageSyncHelper.MergeResult;
import org.thoughtcrime.securesms.contacts.sync.StorageSyncHelper.WriteOperationResult;
import org.thoughtcrime.securesms.database.DatabaseFactory;
import org.thoughtcrime.securesms.database.RecipientDatabase;
import org.thoughtcrime.securesms.database.RecipientDatabase.RecipientSettings;
import org.thoughtcrime.securesms.database.StorageKeyDatabase;
import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
import org.thoughtcrime.securesms.jobmanager.Data;
import org.thoughtcrime.securesms.jobmanager.Job;
import org.thoughtcrime.securesms.jobmanager.impl.NetworkConstraint;
import org.thoughtcrime.securesms.logging.Log;
import org.thoughtcrime.securesms.recipients.RecipientId;
import org.thoughtcrime.securesms.transport.RetryLaterException;
import org.thoughtcrime.securesms.util.FeatureFlags;
import org.thoughtcrime.securesms.util.TextSecurePreferences;
import org.thoughtcrime.securesms.util.Util;
import org.whispersystems.libsignal.InvalidKeyException;
import org.whispersystems.libsignal.util.guava.Optional;
import org.whispersystems.signalservice.api.SignalServiceAccountManager;
import org.whispersystems.signalservice.api.push.exceptions.PushNetworkException;
import org.whispersystems.signalservice.api.storage.SignalContactRecord;
import org.whispersystems.signalservice.api.storage.SignalStorageManifest;
import org.whispersystems.signalservice.api.storage.SignalStorageRecord;
import org.whispersystems.signalservice.api.storage.SignalStorageUtil;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.TimeUnit;
/**
* Does a full sync of our local storage state with the remote storage state. Will write any pending
* local changes and resolve any conflicts with remote storage.
*
* This should be performed whenever a change is made locally, or whenever we want to retrieve
* changes that have been made remotely.
*/
public class StorageSyncJob extends BaseJob {
public static final String KEY = "StorageSyncJob";
public static final String QUEUE_KEY = "StorageSyncingJobs";
private static final String TAG = Log.tag(StorageSyncJob.class);
public StorageSyncJob() {
this(new Job.Parameters.Builder().addConstraint(NetworkConstraint.KEY)
.setQueue(QUEUE_KEY)
.setMaxInstances(1)
.setLifespan(TimeUnit.DAYS.toMillis(1))
.build());
}
private StorageSyncJob(@NonNull Parameters parameters) {
super(parameters);
}
@Override
public @NonNull Data serialize() {
return Data.EMPTY;
}
@Override
public @NonNull String getFactoryKey() {
return KEY;
}
@Override
protected void onRun() throws IOException, RetryLaterException {
if (!FeatureFlags.STORAGE_SERVICE) throw new AssertionError();
try {
boolean needsMultiDeviceSync = performSync();
if (TextSecurePreferences.isMultiDevice(context) && needsMultiDeviceSync) {
ApplicationDependencies.getJobManager().add(new MultiDeviceStorageSyncRequestJob());
}
} catch (InvalidKeyException e) {
Log.w(TAG, "Failed to decrypt remote storage! Force-pushing and syncing the storage key to linked devices.", e);
ApplicationDependencies.getJobManager().startChain(new MultiDeviceKeysUpdateJob())
.then(new StorageForcePushJob())
.then(new MultiDeviceStorageSyncRequestJob())
.enqueue();
}
}
@Override
protected boolean onShouldRetry(@NonNull Exception e) {
return e instanceof PushNetworkException || e instanceof RetryLaterException;
}
@Override
public void onCanceled() {
}
private boolean performSync() throws IOException, RetryLaterException, InvalidKeyException {
SignalServiceAccountManager accountManager = ApplicationDependencies.getSignalServiceAccountManager();
RecipientDatabase recipientDatabase = DatabaseFactory.getRecipientDatabase(context);
StorageKeyDatabase storageKeyDatabase = DatabaseFactory.getStorageKeyDatabase(context);
byte[] kbsMasterKey = TextSecurePreferences.getMasterKey(context);
if (kbsMasterKey == null) {
Log.w(TAG, "No KBS master key is set! Must abort.");
return false;
}
byte[] storageServiceKey = SignalStorageUtil.computeStorageServiceKey(kbsMasterKey);
boolean needsMultiDeviceSync = false;
long localManifestVersion = TextSecurePreferences.getStorageManifestVersion(context);
SignalStorageManifest remoteManifest = accountManager.getStorageManifest(storageServiceKey).or(new SignalStorageManifest(0, Collections.emptyList()));
if (remoteManifest.getVersion() > localManifestVersion) {
Log.i(TAG, "Newer manifest version found! Our version: " + localManifestVersion + ", their version: " + remoteManifest.getVersion());
List<byte[]> allLocalStorageKeys = getAllLocalStorageKeys(context);
KeyDifferenceResult keyDifference = StorageSyncHelper.findKeyDifference(remoteManifest.getStorageKeys(), allLocalStorageKeys);
if (!keyDifference.isEmpty()) {
List<SignalStorageRecord> localOnly = buildLocalStorageRecords(context, keyDifference.getLocalOnlyKeys());
List<SignalStorageRecord> remoteOnly = accountManager.readStorageRecords(storageServiceKey, keyDifference.getRemoteOnlyKeys());
MergeResult mergeResult = StorageSyncHelper.resolveConflict(remoteOnly, localOnly);
WriteOperationResult writeOperationResult = StorageSyncHelper.createWriteOperation(remoteManifest.getVersion(), allLocalStorageKeys, mergeResult);
Optional<SignalStorageManifest> conflict = accountManager.writeStorageRecords(storageServiceKey, writeOperationResult.getManifest(), writeOperationResult.getInserts(), writeOperationResult.getDeletes());
if (conflict.isPresent()) {
Log.w(TAG, "Hit a conflict when trying to resolve the conflict! Retrying.");
throw new RetryLaterException();
}
recipientDatabase.applyStorageSyncUpdates(mergeResult.getLocalContactInserts(), mergeResult.getLocalContactUpdates());
storageKeyDatabase.applyStorageSyncUpdates(mergeResult.getLocalUnknownInserts(), mergeResult.getLocalUnknownDeletes());
needsMultiDeviceSync = true;
Log.i(TAG, "[Post-Conflict] Updating local manifest version to: " + writeOperationResult.getManifest().getVersion());
TextSecurePreferences.setStorageManifestVersion(context, writeOperationResult.getManifest().getVersion());
} else {
Log.i(TAG, "Remote version was newer, but our local data matched.");
Log.i(TAG, "[Post-Empty-Conflict] Updating local manifest version to: " + remoteManifest.getVersion());
TextSecurePreferences.setStorageManifestVersion(context, remoteManifest.getVersion());
}
}
localManifestVersion = TextSecurePreferences.getStorageManifestVersion(context);
List<byte[]> allLocalStorageKeys = recipientDatabase.getAllStorageSyncKeys();
List<RecipientSettings> pendingUpdates = recipientDatabase.getPendingRecipientSyncUpdates();
List<RecipientSettings> pendingInsertions = recipientDatabase.getPendingRecipientSyncInsertions();
List<RecipientSettings> pendingDeletions = recipientDatabase.getPendingRecipientSyncDeletions();
Optional<LocalWriteResult> localWriteResult = StorageSyncHelper.buildStorageUpdatesForLocal(localManifestVersion,
allLocalStorageKeys,
pendingUpdates,
pendingInsertions,
pendingDeletions);
if (localWriteResult.isPresent()) {
WriteOperationResult localWrite = localWriteResult.get().getWriteResult();
Optional<SignalStorageManifest> conflict = accountManager.writeStorageRecords(storageServiceKey, localWrite.getManifest(), localWrite.getInserts(), localWrite.getDeletes());
if (conflict.isPresent()) {
Log.w(TAG, "Hit a conflict when trying to upload our local writes! Retrying.");
throw new RetryLaterException();
}
List<RecipientId> clearIds = new ArrayList<>(pendingUpdates.size() + pendingInsertions.size() + pendingDeletions.size());
clearIds.addAll(Stream.of(pendingUpdates).map(RecipientSettings::getId).toList());
clearIds.addAll(Stream.of(pendingInsertions).map(RecipientSettings::getId).toList());
clearIds.addAll(Stream.of(pendingDeletions).map(RecipientSettings::getId).toList());
recipientDatabase.clearDirtyState(clearIds);
recipientDatabase.updateStorageKeys(localWriteResult.get().getStorageKeyUpdates());
needsMultiDeviceSync = true;
Log.i(TAG, "[Post Write] Updating local manifest version to: " + localWriteResult.get().getWriteResult().getManifest().getVersion());
TextSecurePreferences.setStorageManifestVersion(context, localWriteResult.get().getWriteResult().getManifest().getVersion());
} else {
Log.i(TAG, "Nothing locally to write.");
}
return needsMultiDeviceSync;
}
public static @NonNull List<byte[]> getAllLocalStorageKeys(@NonNull Context context) {
return Util.concatenatedList(DatabaseFactory.getRecipientDatabase(context).getAllStorageSyncKeys(),
DatabaseFactory.getStorageKeyDatabase(context).getAllKeys());
}
public static @NonNull List<SignalStorageRecord> buildLocalStorageRecords(@NonNull Context context, @NonNull List<byte[]> keys) {
RecipientDatabase recipientDatabase = DatabaseFactory.getRecipientDatabase(context);
StorageKeyDatabase storageKeyDatabase = DatabaseFactory.getStorageKeyDatabase(context);
List<SignalStorageRecord> records = new ArrayList<>(keys.size());
for (byte[] key : keys) {
SignalStorageRecord record = Optional.fromNullable(recipientDatabase.getByStorageSyncKey(key))
.transform(recipient -> {
SignalContactRecord contact = StorageSyncHelper.localToRemoteContact(recipient);
return SignalStorageRecord.forContact(key, contact);
})
.or(() -> storageKeyDatabase.getByKey(key));
records.add(record);
}
return records;
}
public static final class Factory implements Job.Factory<StorageSyncJob> {
@Override
public @NonNull StorageSyncJob create(@NonNull Parameters parameters, @NonNull Data data) {
return new StorageSyncJob(parameters);
}
}
}