/
IncomingMessageProcessor.java
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/
IncomingMessageProcessor.java
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package org.thoughtcrime.securesms.messages;
import android.app.Application;
import android.content.Context;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import org.signal.core.util.logging.Log;
import org.thoughtcrime.securesms.crypto.DatabaseSessionLock;
import org.thoughtcrime.securesms.crypto.IdentityKeyUtil;
import org.thoughtcrime.securesms.database.DatabaseFactory;
import org.thoughtcrime.securesms.database.GroupDatabase;
import org.thoughtcrime.securesms.database.MessageDatabase.SyncMessageId;
import org.thoughtcrime.securesms.database.MmsSmsDatabase;
import org.thoughtcrime.securesms.database.PushDatabase;
import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
import org.thoughtcrime.securesms.groups.BadGroupIdException;
import org.thoughtcrime.securesms.groups.GroupChangeBusyException;
import org.thoughtcrime.securesms.groups.GroupId;
import org.thoughtcrime.securesms.jobmanager.Job;
import org.thoughtcrime.securesms.jobmanager.JobManager;
import org.thoughtcrime.securesms.jobs.PushDecryptMessageJob;
import org.thoughtcrime.securesms.jobs.PushProcessMessageJob;
import org.thoughtcrime.securesms.messages.MessageDecryptionUtil.DecryptionResult;
import org.thoughtcrime.securesms.recipients.Recipient;
import org.thoughtcrime.securesms.recipients.RecipientId;
import org.thoughtcrime.securesms.util.FeatureFlags;
import org.thoughtcrime.securesms.util.GroupUtil;
import org.thoughtcrime.securesms.util.SetUtil;
import org.thoughtcrime.securesms.util.Stopwatch;
import org.thoughtcrime.securesms.util.TextSecurePreferences;
import org.whispersystems.signalservice.api.SignalSessionLock;
import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
import org.whispersystems.signalservice.api.messages.SignalServiceGroupContext;
import java.io.Closeable;
import java.io.IOException;
import java.util.concurrent.locks.ReentrantLock;
/**
* The central entry point for all envelopes that have been retrieved. Envelopes must be processed
* here to guarantee proper ordering.
*/
public class IncomingMessageProcessor {
private static final String TAG = Log.tag(IncomingMessageProcessor.class);
private final Application context;
private final ReentrantLock lock;
public IncomingMessageProcessor(@NonNull Application context) {
this.context = context;
this.lock = new ReentrantLock();
}
/**
* @return An instance of a Processor that will allow you to process messages in a thread safe
* way. Must be closed.
*/
public Processor acquire() {
lock.lock();
return new Processor(context);
}
private void release() {
lock.unlock();
}
public class Processor implements Closeable {
private final Context context;
private final MmsSmsDatabase mmsSmsDatabase;
private final JobManager jobManager;
private Processor(@NonNull Context context) {
this.context = context;
this.mmsSmsDatabase = DatabaseFactory.getMmsSmsDatabase(context);
this.jobManager = ApplicationDependencies.getJobManager();
}
/**
* @return The id of the {@link PushDecryptMessageJob} that was scheduled to process the message, if
* one was created. Otherwise null.
*/
public @Nullable String processEnvelope(@NonNull SignalServiceEnvelope envelope) {
if (envelope.hasSource()) {
Recipient.externalHighTrustPush(context, envelope.getSourceAddress());
}
if (envelope.isReceipt()) {
processReceipt(envelope);
return null;
} else if (envelope.isPreKeySignalMessage() || envelope.isSignalMessage() || envelope.isUnidentifiedSender()) {
return processMessage(envelope);
} else {
Log.w(TAG, "Received envelope of unknown type: " + envelope.getType());
return null;
}
}
private @Nullable String processMessage(@NonNull SignalServiceEnvelope envelope) {
if (FeatureFlags.internalUser()) {
return processMessageInline(envelope);
} else {
return processMessageDeferred(envelope);
}
}
private @Nullable String processMessageDeferred(@NonNull SignalServiceEnvelope envelope) {
Job job = new PushDecryptMessageJob(context, envelope);
jobManager.add(job);
return job.getId();
}
private @Nullable String processMessageInline(@NonNull SignalServiceEnvelope envelope) {
Log.i(TAG, "Received message " + envelope.getTimestamp() + ".");
Stopwatch stopwatch = new Stopwatch("message");
if (needsToEnqueueDecryption()) {
Log.d(TAG, "Need to enqueue decryption.");
PushDecryptMessageJob job = new PushDecryptMessageJob(context, envelope);
jobManager.add(job);
return job.getId();
}
stopwatch.split("queue-check");
long ownerThreadId = DatabaseSessionLock.INSTANCE.getLikeyOwnerThreadId();
if (ownerThreadId != DatabaseSessionLock.NO_OWNER && ownerThreadId != Thread.currentThread().getId()) {
Log.i(TAG, "It is likely that some other thread has this lock. Owner: " + ownerThreadId + ", Us: " + Thread.currentThread().getId());
}
try (SignalSessionLock.Lock unused = DatabaseSessionLock.INSTANCE.acquire()) {
Log.i(TAG, "Acquired lock while processing message " + envelope.getTimestamp() + ".");
DecryptionResult result = MessageDecryptionUtil.decrypt(context, envelope);
Log.d(TAG, "Decryption finished for " + envelope.getTimestamp());
stopwatch.split("decrypt");
for (Job job : result.getJobs()) {
jobManager.add(job);
}
stopwatch.split("jobs");
if (needsToEnqueueProcessing(result)) {
Log.d(TAG, "Need to enqueue processing.");
jobManager.add(new PushProcessMessageJob(result.getState(), result.getContent(), result.getException(), -1, envelope.getTimestamp()));
return null;
}
stopwatch.split("group-check");
try {
MessageContentProcessor processor = new MessageContentProcessor(context);
processor.process(result.getState(), result.getContent(), result.getException(), envelope.getTimestamp(), -1);
return null;
} catch (IOException | GroupChangeBusyException e) {
Log.w(TAG, "Exception during message processing.", e);
jobManager.add(new PushProcessMessageJob(result.getState(), result.getContent(), result.getException(), -1, envelope.getTimestamp()));
}
} finally {
stopwatch.split("process");
stopwatch.stop(TAG);
}
return null;
}
private void processReceipt(@NonNull SignalServiceEnvelope envelope) {
Log.i(TAG, "Received server receipt for " + envelope.getTimestamp());
mmsSmsDatabase.incrementDeliveryReceiptCount(new SyncMessageId(Recipient.externalHighTrustPush(context, envelope.getSourceAddress()).getId(), envelope.getTimestamp()),
System.currentTimeMillis());
}
private boolean needsToEnqueueDecryption() {
return !jobManager.areQueuesEmpty(SetUtil.newHashSet(Job.Parameters.MIGRATION_QUEUE_KEY, PushDecryptMessageJob.QUEUE)) ||
!IdentityKeyUtil.hasIdentityKey(context) ||
TextSecurePreferences.getNeedsSqlCipherMigration(context);
}
private boolean needsToEnqueueProcessing(@NonNull DecryptionResult result) {
SignalServiceGroupContext groupContext = GroupUtil.getGroupContextIfPresent(result.getContent());
if (groupContext != null) {
try {
GroupId groupId = GroupUtil.idFromGroupContext(groupContext);
if (groupId.isV2()) {
String queueName = PushProcessMessageJob.getQueueName(Recipient.externalPossiblyMigratedGroup(context, groupId).getId());
GroupDatabase groupDatabase = DatabaseFactory.getGroupDatabase(context);
return !jobManager.isQueueEmpty(queueName) ||
groupContext.getGroupV2().get().getRevision() > groupDatabase.getGroupV2Revision(groupId.requireV2()) ||
groupDatabase.getGroupV1ByExpectedV2(groupId.requireV2()).isPresent();
} else {
return false;
}
} catch (BadGroupIdException e) {
Log.w(TAG, "Bad group ID!");
return false;
}
} else if (result.getContent() != null) {
RecipientId recipientId = RecipientId.fromHighTrust(result.getContent().getSender());
String queueKey = PushProcessMessageJob.getQueueName(recipientId);
return !jobManager.isQueueEmpty(queueKey);
} else if (result.getException() != null) {
RecipientId recipientId = Recipient.external(context, result.getException().getSender()).getId();
String queueKey = PushProcessMessageJob.getQueueName(recipientId);
return !jobManager.isQueueEmpty(queueKey);
} else {
return false;
}
}
@Override
public void close() {
release();
}
}
}