280 lines
12 KiB
Java
280 lines
12 KiB
Java
package org.thoughtcrime.securesms.service;
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import android.content.Context;
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import org.jetbrains.annotations.NotNull;
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import org.session.libsession.database.StorageProtocol;
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import org.session.libsession.messaging.MessagingModuleConfiguration;
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import org.session.libsession.messaging.messages.ExpirationConfiguration;
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import org.session.libsession.messaging.messages.control.ExpirationTimerUpdate;
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import org.session.libsession.messaging.messages.signal.IncomingMediaMessage;
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import org.session.libsession.messaging.messages.signal.OutgoingExpirationUpdateMessage;
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import org.session.libsession.snode.SnodeAPI;
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import org.session.libsession.utilities.Address;
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import org.session.libsession.utilities.GroupUtil;
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import org.session.libsession.utilities.SSKEnvironment;
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import org.session.libsession.utilities.TextSecurePreferences;
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import org.session.libsession.utilities.recipients.Recipient;
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import org.session.libsignal.messages.SignalServiceGroup;
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import org.session.libsignal.utilities.Log;
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import org.session.libsignal.utilities.guava.Optional;
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import org.thoughtcrime.securesms.database.MmsDatabase;
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import org.thoughtcrime.securesms.database.MmsSmsDatabase;
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import org.thoughtcrime.securesms.database.SmsDatabase;
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import org.thoughtcrime.securesms.database.model.MessageRecord;
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import org.thoughtcrime.securesms.dependencies.DatabaseComponent;
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import org.thoughtcrime.securesms.mms.MmsException;
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import java.io.IOException;
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import java.util.Comparator;
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import java.util.TreeSet;
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import java.util.concurrent.Executor;
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import java.util.concurrent.Executors;
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import network.loki.messenger.libsession_util.util.ExpiryMode;
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public class ExpiringMessageManager implements SSKEnvironment.MessageExpirationManagerProtocol {
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private static final String TAG = ExpiringMessageManager.class.getSimpleName();
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private final TreeSet<ExpiringMessageReference> expiringMessageReferences = new TreeSet<>(new ExpiringMessageComparator());
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private final Executor executor = Executors.newSingleThreadExecutor();
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private final SmsDatabase smsDatabase;
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private final MmsDatabase mmsDatabase;
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private final MmsSmsDatabase mmsSmsDatabase;
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private final Context context;
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public ExpiringMessageManager(Context context) {
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this.context = context.getApplicationContext();
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this.smsDatabase = DatabaseComponent.get(context).smsDatabase();
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this.mmsDatabase = DatabaseComponent.get(context).mmsDatabase();
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this.mmsSmsDatabase = DatabaseComponent.get(context).mmsSmsDatabase();
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executor.execute(new LoadTask());
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executor.execute(new ProcessTask());
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}
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public void scheduleDeletion(long id, boolean mms, long startedAtTimestamp, long expiresInMillis) {
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long expiresAtMillis = startedAtTimestamp + expiresInMillis;
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synchronized (expiringMessageReferences) {
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expiringMessageReferences.add(new ExpiringMessageReference(id, mms, expiresAtMillis));
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expiringMessageReferences.notifyAll();
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}
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}
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public void checkSchedule() {
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synchronized (expiringMessageReferences) {
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expiringMessageReferences.notifyAll();
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}
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}
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@Override
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public void setExpirationTimer(@NotNull ExpirationTimerUpdate message, ExpiryMode expiryMode) {
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String userPublicKey = TextSecurePreferences.getLocalNumber(context);
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String senderPublicKey = message.getSender();
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long sentTimestamp = message.getSentTimestamp() == null ? 0 : message.getSentTimestamp();
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long expireStartedAt = (expiryMode instanceof ExpiryMode.AfterSend || message.isSenderSelf()) ? sentTimestamp : 0;
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// Notify the user
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if (senderPublicKey == null || userPublicKey.equals(senderPublicKey)) {
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// sender is self or a linked device
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insertOutgoingExpirationTimerMessage(message, expireStartedAt);
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} else {
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insertIncomingExpirationTimerMessage(message, expireStartedAt);
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}
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if (expiryMode.getExpirySeconds() > 0 && message.getSentTimestamp() != null && senderPublicKey != null) {
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startAnyExpiration(message.getSentTimestamp(), senderPublicKey, expireStartedAt);
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}
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}
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private void insertIncomingExpirationTimerMessage(ExpirationTimerUpdate message, long expireStartedAt) {
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String senderPublicKey = message.getSender();
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Long sentTimestamp = message.getSentTimestamp();
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String groupId = message.getGroupPublicKey();
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long expiresInMillis = message.getExpiryMode().getExpiryMillis();
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Optional<SignalServiceGroup> groupInfo = Optional.absent();
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Address address = Address.fromSerialized(senderPublicKey);
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Recipient recipient = Recipient.from(context, address, false);
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// if the sender is blocked, we don't display the update, except if it's in a closed group
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if (recipient.isBlocked() && groupId == null) return;
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try {
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if (groupId != null) {
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String groupID = GroupUtil.doubleEncodeGroupID(groupId);
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groupInfo = Optional.of(new SignalServiceGroup(GroupUtil.getDecodedGroupIDAsData(groupID), SignalServiceGroup.GroupType.SIGNAL));
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Address groupAddress = Address.fromSerialized(groupID);
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recipient = Recipient.from(context, groupAddress, false);
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}
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Long threadId = MessagingModuleConfiguration.getShared().getStorage().getThreadId(recipient);
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if (threadId == null) {
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return;
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}
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IncomingMediaMessage mediaMessage = new IncomingMediaMessage(address, sentTimestamp, -1,
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expiresInMillis, expireStartedAt, true,
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false,
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false,
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false,
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Optional.absent(),
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groupInfo,
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Optional.absent(),
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Optional.absent(),
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Optional.absent(),
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Optional.absent(),
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Optional.absent());
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//insert the timer update message
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mmsDatabase.insertSecureDecryptedMessageInbox(mediaMessage, threadId, true);
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} catch (IOException | MmsException ioe) {
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Log.e("Loki", "Failed to insert expiration update message.");
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}
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}
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private void insertOutgoingExpirationTimerMessage(ExpirationTimerUpdate message, long expireStartedAt) {
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Long sentTimestamp = message.getSentTimestamp();
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String groupId = message.getGroupPublicKey();
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long duration = message.getExpiryMode().getExpiryMillis();
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Address address;
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try {
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if (groupId != null) {
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address = Address.fromSerialized(GroupUtil.doubleEncodeGroupID(groupId));
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} else {
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address = Address.fromSerialized((message.getSyncTarget() != null && !message.getSyncTarget().isEmpty()) ? message.getSyncTarget() : message.getRecipient());
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}
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Recipient recipient = Recipient.from(context, address, false);
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StorageProtocol storage = MessagingModuleConfiguration.getShared().getStorage();
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message.setThreadID(storage.getOrCreateThreadIdFor(address));
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OutgoingExpirationUpdateMessage timerUpdateMessage = new OutgoingExpirationUpdateMessage(recipient, sentTimestamp, duration, expireStartedAt, groupId);
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mmsDatabase.insertSecureDecryptedMessageOutbox(timerUpdateMessage, message.getThreadID(), sentTimestamp, true);
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} catch (MmsException | IOException ioe) {
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Log.e("Loki", "Failed to insert expiration update message.", ioe);
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}
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}
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@Override
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public void startAnyExpiration(long timestamp, @NotNull String author, long expireStartedAt) {
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MessageRecord messageRecord = mmsSmsDatabase.getMessageFor(timestamp, author);
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if (messageRecord == null) return;
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boolean mms = messageRecord.isMms();
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ExpirationConfiguration config = DatabaseComponent.get(context).storage().getExpirationConfiguration(messageRecord.getThreadId());
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if (config == null || !config.isEnabled()) return;
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ExpiryMode mode = config.getExpiryMode();
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if (mms) {
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mmsDatabase.markExpireStarted(messageRecord.getId(), expireStartedAt);
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} else {
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smsDatabase.markExpireStarted(messageRecord.getId(), expireStartedAt);
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}
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scheduleDeletion(messageRecord.getId(), mms, expireStartedAt, (mode != null ? mode.getExpiryMillis() : 0));
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}
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private class LoadTask implements Runnable {
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public void run() {
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SmsDatabase.Reader smsReader = smsDatabase.readerFor(smsDatabase.getExpirationStartedMessages());
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MmsDatabase.Reader mmsReader = mmsDatabase.getExpireStartedMessages();
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MessageRecord messageRecord;
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while ((messageRecord = smsReader.getNext()) != null) {
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expiringMessageReferences.add(new ExpiringMessageReference(messageRecord.getId(),
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messageRecord.isMms(),
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messageRecord.getExpireStarted() + messageRecord.getExpiresIn()));
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}
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while ((messageRecord = mmsReader.getNext()) != null) {
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expiringMessageReferences.add(new ExpiringMessageReference(messageRecord.getId(),
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messageRecord.isMms(),
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messageRecord.getExpireStarted() + messageRecord.getExpiresIn()));
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}
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smsReader.close();
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mmsReader.close();
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}
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}
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@SuppressWarnings("InfiniteLoopStatement")
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private class ProcessTask implements Runnable {
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public void run() {
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while (true) {
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ExpiringMessageReference expiredMessage = null;
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synchronized (expiringMessageReferences) {
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try {
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while (expiringMessageReferences.isEmpty()) expiringMessageReferences.wait();
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ExpiringMessageReference nextReference = expiringMessageReferences.first();
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long waitTime = nextReference.expiresAtMillis - SnodeAPI.getNowWithOffset();
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if (waitTime > 0) {
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ExpirationListener.setAlarm(context, waitTime);
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expiringMessageReferences.wait(waitTime);
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} else {
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expiredMessage = nextReference;
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expiringMessageReferences.remove(nextReference);
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}
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} catch (InterruptedException e) {
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Log.w(TAG, e);
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}
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}
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if (expiredMessage != null) {
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if (expiredMessage.mms) mmsDatabase.deleteMessage(expiredMessage.id);
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else smsDatabase.deleteMessage(expiredMessage.id);
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}
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}
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}
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}
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private static class ExpiringMessageReference {
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private final long id;
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private final boolean mms;
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private final long expiresAtMillis;
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private ExpiringMessageReference(long id, boolean mms, long expiresAtMillis) {
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this.id = id;
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this.mms = mms;
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this.expiresAtMillis = expiresAtMillis;
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}
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@Override
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public boolean equals(Object other) {
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if (other == null) return false;
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if (!(other instanceof ExpiringMessageReference)) return false;
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ExpiringMessageReference that = (ExpiringMessageReference)other;
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return this.id == that.id && this.mms == that.mms && this.expiresAtMillis == that.expiresAtMillis;
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}
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@Override
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public int hashCode() {
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return (int)this.id ^ (mms ? 1 : 0) ^ (int)expiresAtMillis;
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}
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}
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private static class ExpiringMessageComparator implements Comparator<ExpiringMessageReference> {
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@Override
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public int compare(ExpiringMessageReference lhs, ExpiringMessageReference rhs) {
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if (lhs.expiresAtMillis < rhs.expiresAtMillis) return -1;
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else if (lhs.expiresAtMillis > rhs.expiresAtMillis) return 1;
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else if (lhs.id < rhs.id) return -1;
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else if (lhs.id > rhs.id) return 1;
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else if (!lhs.mms && rhs.mms) return -1;
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else if (lhs.mms && !rhs.mms) return 1;
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else return 0;
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}
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}
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}
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