2015-06-24 18:30:55 -07:00

419 lines
21 KiB
Java

package org.thoughtcrime.securesms.jobs;
import android.content.Context;
import android.util.Log;
import android.util.Pair;
import org.thoughtcrime.securesms.ApplicationContext;
import org.thoughtcrime.securesms.crypto.MasterSecret;
import org.thoughtcrime.securesms.crypto.SecurityEvent;
import org.thoughtcrime.securesms.crypto.storage.TextSecureAxolotlStore;
import org.thoughtcrime.securesms.crypto.storage.TextSecureSessionStore;
import org.thoughtcrime.securesms.database.DatabaseFactory;
import org.thoughtcrime.securesms.database.EncryptingSmsDatabase;
import org.thoughtcrime.securesms.database.MmsDatabase;
import org.thoughtcrime.securesms.database.NoSuchMessageException;
import org.thoughtcrime.securesms.database.PushDatabase;
import org.thoughtcrime.securesms.groups.GroupMessageProcessor;
import org.thoughtcrime.securesms.jobs.requirements.MasterSecretRequirement;
import org.thoughtcrime.securesms.mms.IncomingMediaMessage;
import org.thoughtcrime.securesms.mms.OutgoingMediaMessage;
import org.thoughtcrime.securesms.mms.OutgoingSecureMediaMessage;
import org.thoughtcrime.securesms.notifications.MessageNotifier;
import org.thoughtcrime.securesms.recipients.RecipientFactory;
import org.thoughtcrime.securesms.recipients.Recipients;
import org.thoughtcrime.securesms.service.KeyCachingService;
import org.thoughtcrime.securesms.sms.IncomingEncryptedMessage;
import org.thoughtcrime.securesms.sms.IncomingEndSessionMessage;
import org.thoughtcrime.securesms.sms.IncomingPreKeyBundleMessage;
import org.thoughtcrime.securesms.sms.IncomingTextMessage;
import org.thoughtcrime.securesms.sms.OutgoingTextMessage;
import org.thoughtcrime.securesms.util.Base64;
import org.thoughtcrime.securesms.util.GroupUtil;
import org.thoughtcrime.securesms.util.TextSecurePreferences;
import org.whispersystems.jobqueue.JobParameters;
import org.whispersystems.libaxolotl.DuplicateMessageException;
import org.whispersystems.libaxolotl.IdentityKey;
import org.whispersystems.libaxolotl.InvalidKeyException;
import org.whispersystems.libaxolotl.InvalidKeyIdException;
import org.whispersystems.libaxolotl.InvalidMessageException;
import org.whispersystems.libaxolotl.InvalidVersionException;
import org.whispersystems.libaxolotl.LegacyMessageException;
import org.whispersystems.libaxolotl.NoSessionException;
import org.whispersystems.libaxolotl.UntrustedIdentityException;
import org.whispersystems.libaxolotl.protocol.PreKeyWhisperMessage;
import org.whispersystems.libaxolotl.state.AxolotlStore;
import org.whispersystems.libaxolotl.state.SessionStore;
import org.whispersystems.libaxolotl.util.guava.Optional;
import org.whispersystems.textsecure.api.crypto.TextSecureCipher;
import org.whispersystems.textsecure.api.messages.TextSecureContent;
import org.whispersystems.textsecure.api.messages.TextSecureEnvelope;
import org.whispersystems.textsecure.api.messages.TextSecureGroup;
import org.whispersystems.textsecure.api.messages.TextSecureDataMessage;
import org.whispersystems.textsecure.api.messages.multidevice.RequestMessage;
import org.whispersystems.textsecure.api.messages.multidevice.SentTranscriptMessage;
import org.whispersystems.textsecure.api.messages.multidevice.TextSecureSyncMessage;
import org.whispersystems.textsecure.api.push.TextSecureAddress;
import java.util.concurrent.TimeUnit;
import ws.com.google.android.mms.MmsException;
public class PushDecryptJob extends MasterSecretJob {
public static final String TAG = PushDecryptJob.class.getSimpleName();
private final long messageId;
private final long smsMessageId;
public PushDecryptJob(Context context, long pushMessageId, String sender) {
this(context, pushMessageId, -1, sender);
}
public PushDecryptJob(Context context, long pushMessageId, long smsMessageId, String sender) {
super(context, JobParameters.newBuilder()
.withPersistence()
.withRequirement(new MasterSecretRequirement(context))
.withGroupId(sender)
.withWakeLock(true, 5, TimeUnit.SECONDS)
.create());
this.messageId = pushMessageId;
this.smsMessageId = smsMessageId;
}
@Override
public void onAdded() {
if (KeyCachingService.getMasterSecret(context) == null) {
MessageNotifier.updateNotification(context, null, -2);
}
}
@Override
public void onRun(MasterSecret masterSecret) throws NoSuchMessageException {
PushDatabase database = DatabaseFactory.getPushDatabase(context);
TextSecureEnvelope envelope = database.get(messageId);
Optional<Long> optionalSmsMessageId = smsMessageId > 0 ? Optional.of(smsMessageId) :
Optional.<Long>absent();
handleMessage(masterSecret, envelope, optionalSmsMessageId);
database.delete(messageId);
}
@Override
public boolean onShouldRetryThrowable(Exception exception) {
return false;
}
@Override
public void onCanceled() {
}
private void handleMessage(MasterSecret masterSecret, TextSecureEnvelope envelope, Optional<Long> smsMessageId) {
try {
AxolotlStore axolotlStore = new TextSecureAxolotlStore(context, masterSecret);
TextSecureAddress localAddress = new TextSecureAddress(TextSecurePreferences.getLocalNumber(context));
TextSecureCipher cipher = new TextSecureCipher(localAddress, axolotlStore);
TextSecureContent content = cipher.decrypt(envelope);
if (content.getDataMessage().isPresent()) {
TextSecureDataMessage message = content.getDataMessage().get();
if (message.isEndSession()) handleEndSessionMessage(masterSecret, envelope, message, smsMessageId);
else if (message.isGroupUpdate()) handleGroupMessage(masterSecret, envelope, message, smsMessageId);
else if (message.getAttachments().isPresent()) handleMediaMessage(masterSecret, envelope, message, smsMessageId);
else handleTextMessage(masterSecret, envelope, message, smsMessageId);
} else if (content.getSyncMessage().isPresent()) {
TextSecureSyncMessage syncMessage = content.getSyncMessage().get();
if (syncMessage.getSent().isPresent()) handleSynchronizeSentMessage(masterSecret, syncMessage.getSent().get(), smsMessageId);
else if (syncMessage.getRequest().isPresent()) handleSynchronizeRequestMessage(masterSecret, syncMessage.getRequest().get());
}
if (envelope.isPreKeyWhisperMessage()) {
ApplicationContext.getInstance(context).getJobManager().add(new RefreshPreKeysJob(context));
}
} catch (InvalidVersionException e) {
Log.w(TAG, e);
handleInvalidVersionMessage(masterSecret, envelope, smsMessageId);
} catch (InvalidMessageException | InvalidKeyIdException | InvalidKeyException | MmsException e) {
Log.w(TAG, e);
handleCorruptMessage(masterSecret, envelope, smsMessageId);
} catch (NoSessionException e) {
Log.w(TAG, e);
handleNoSessionMessage(masterSecret, envelope, smsMessageId);
} catch (LegacyMessageException e) {
Log.w(TAG, e);
handleLegacyMessage(masterSecret, envelope, smsMessageId);
} catch (DuplicateMessageException e) {
Log.w(TAG, e);
handleDuplicateMessage(masterSecret, envelope, smsMessageId);
} catch (UntrustedIdentityException e) {
Log.w(TAG, e);
handleUntrustedIdentityMessage(masterSecret, envelope, smsMessageId);
}
}
private void handleEndSessionMessage(MasterSecret masterSecret, TextSecureEnvelope envelope,
TextSecureDataMessage message, Optional<Long> smsMessageId)
{
EncryptingSmsDatabase smsDatabase = DatabaseFactory.getEncryptingSmsDatabase(context);
IncomingTextMessage incomingTextMessage = new IncomingTextMessage(envelope.getSource(),
envelope.getSourceDevice(),
message.getTimestamp(),
"", Optional.<TextSecureGroup>absent());
long threadId;
if (!smsMessageId.isPresent()) {
IncomingEndSessionMessage incomingEndSessionMessage = new IncomingEndSessionMessage(incomingTextMessage);
Pair<Long, Long> messageAndThreadId = smsDatabase.insertMessageInbox(masterSecret, incomingEndSessionMessage);
threadId = messageAndThreadId.second;
} else {
smsDatabase.markAsEndSession(smsMessageId.get());
threadId = smsDatabase.getThreadIdForMessage(smsMessageId.get());
}
SessionStore sessionStore = new TextSecureSessionStore(context, masterSecret);
sessionStore.deleteAllSessions(envelope.getSource());
SecurityEvent.broadcastSecurityUpdateEvent(context, threadId);
MessageNotifier.updateNotification(context, masterSecret, threadId);
}
private void handleGroupMessage(MasterSecret masterSecret, TextSecureEnvelope envelope, TextSecureDataMessage message, Optional<Long> smsMessageId) {
GroupMessageProcessor.process(context, masterSecret, envelope, message);
if (smsMessageId.isPresent()) {
DatabaseFactory.getSmsDatabase(context).deleteMessage(smsMessageId.get());
}
}
private void handleSynchronizeSentMessage(MasterSecret masterSecret, SentTranscriptMessage message, Optional<Long> smsMessageId)
throws MmsException
{
if (message.getMessage().getAttachments().isPresent()) {
handleSynchronizeSentMediaMessage(masterSecret, message, smsMessageId);
} else {
handleSynchronizeSentTextMessage(masterSecret, message, smsMessageId);
}
}
private void handleSynchronizeRequestMessage(MasterSecret masterSecret, RequestMessage message) {
if (message.isContactsRequest()) {
ApplicationContext.getInstance(context)
.getJobManager()
.add(new MultiDeviceContactUpdateJob(getContext()));
}
}
private void handleMediaMessage(MasterSecret masterSecret, TextSecureEnvelope envelope,
TextSecureDataMessage message, Optional<Long> smsMessageId)
throws MmsException
{
MmsDatabase database = DatabaseFactory.getMmsDatabase(context);
String localNumber = TextSecurePreferences.getLocalNumber(context);
IncomingMediaMessage mediaMessage = new IncomingMediaMessage(masterSecret, envelope.getSource(),
localNumber, message.getTimestamp(),
Optional.fromNullable(envelope.getRelay()),
message.getBody(),
message.getGroupInfo(),
message.getAttachments());
Pair<Long, Long> messageAndThreadId = database.insertSecureDecryptedMessageInbox(masterSecret, mediaMessage, -1);
ApplicationContext.getInstance(context)
.getJobManager()
.add(new AttachmentDownloadJob(context, messageAndThreadId.first));
if (smsMessageId.isPresent()) {
DatabaseFactory.getSmsDatabase(context).deleteMessage(smsMessageId.get());
}
MessageNotifier.updateNotification(context, masterSecret, messageAndThreadId.second);
}
private void handleSynchronizeSentMediaMessage(MasterSecret masterSecret,
SentTranscriptMessage message,
Optional<Long> smsMessageId)
throws MmsException
{
MmsDatabase database = DatabaseFactory.getMmsDatabase(context);
Recipients recipients = getSyncMessageDestination(message);
OutgoingMediaMessage mediaMessage = new OutgoingMediaMessage(context, masterSecret, recipients,
message.getMessage().getAttachments().get(),
message.getMessage().getBody().orNull());
mediaMessage = new OutgoingSecureMediaMessage(mediaMessage);
long threadId = DatabaseFactory.getThreadDatabase(context).getThreadIdFor(recipients);
long messageId = database.insertMessageOutbox(masterSecret, mediaMessage, threadId, false, message.getTimestamp());
database.markAsSent(messageId, "push".getBytes(), 0);
database.markAsPush(messageId);
ApplicationContext.getInstance(context)
.getJobManager()
.add(new AttachmentDownloadJob(context, messageId));
if (smsMessageId.isPresent()) {
DatabaseFactory.getSmsDatabase(context).deleteMessage(smsMessageId.get());
}
}
private void handleTextMessage(MasterSecret masterSecret, TextSecureEnvelope envelope,
TextSecureDataMessage message, Optional<Long> smsMessageId)
{
EncryptingSmsDatabase database = DatabaseFactory.getEncryptingSmsDatabase(context);
String body = message.getBody().isPresent() ? message.getBody().get() : "";
Pair<Long, Long> messageAndThreadId;
if (smsMessageId.isPresent()) {
messageAndThreadId = database.updateBundleMessageBody(masterSecret, smsMessageId.get(), body);
} else {
IncomingTextMessage textMessage = new IncomingTextMessage(envelope.getSource(),
envelope.getSourceDevice(),
message.getTimestamp(), body,
message.getGroupInfo());
textMessage = new IncomingEncryptedMessage(textMessage, body);
messageAndThreadId = database.insertMessageInbox(masterSecret, textMessage);
}
MessageNotifier.updateNotification(context, masterSecret, messageAndThreadId.second);
}
private void handleSynchronizeSentTextMessage(MasterSecret masterSecret,
SentTranscriptMessage message,
Optional<Long> smsMessageId)
{
EncryptingSmsDatabase database = DatabaseFactory.getEncryptingSmsDatabase(context);
Recipients recipients = getSyncMessageDestination(message);
String body = message.getMessage().getBody().or("");
OutgoingTextMessage outgoingTextMessage = new OutgoingTextMessage(recipients, body);
long threadId = DatabaseFactory.getThreadDatabase(context).getThreadIdFor(recipients);
long messageId = database.insertMessageOutbox(masterSecret, threadId, outgoingTextMessage, false, message.getTimestamp());
database.markAsSent(messageId);
database.markAsPush(messageId);
database.markAsSecure(messageId);
if (smsMessageId.isPresent()) {
database.deleteMessage(smsMessageId.get());
}
}
private void handleInvalidVersionMessage(MasterSecret masterSecret, TextSecureEnvelope envelope, Optional<Long> smsMessageId) {
EncryptingSmsDatabase smsDatabase = DatabaseFactory.getEncryptingSmsDatabase(context);
if (!smsMessageId.isPresent()) {
Pair<Long, Long> messageAndThreadId = insertPlaceholder(masterSecret, envelope);
smsDatabase.markAsInvalidVersionKeyExchange(messageAndThreadId.first);
MessageNotifier.updateNotification(context, masterSecret, messageAndThreadId.second);
} else {
smsDatabase.markAsInvalidVersionKeyExchange(smsMessageId.get());
}
}
private void handleCorruptMessage(MasterSecret masterSecret, TextSecureEnvelope envelope, Optional<Long> smsMessageId) {
EncryptingSmsDatabase smsDatabase = DatabaseFactory.getEncryptingSmsDatabase(context);
if (!smsMessageId.isPresent()) {
Pair<Long, Long> messageAndThreadId = insertPlaceholder(masterSecret, envelope);
smsDatabase.markAsDecryptFailed(messageAndThreadId.first);
MessageNotifier.updateNotification(context, masterSecret, messageAndThreadId.second);
} else {
smsDatabase.markAsDecryptFailed(smsMessageId.get());
}
}
private void handleNoSessionMessage(MasterSecret masterSecret, TextSecureEnvelope envelope, Optional<Long> smsMessageId) {
EncryptingSmsDatabase smsDatabase = DatabaseFactory.getEncryptingSmsDatabase(context);
if (!smsMessageId.isPresent()) {
Pair<Long, Long> messageAndThreadId = insertPlaceholder(masterSecret, envelope);
smsDatabase.markAsNoSession(messageAndThreadId.first);
MessageNotifier.updateNotification(context, masterSecret, messageAndThreadId.second);
} else {
smsDatabase.markAsNoSession(smsMessageId.get());
}
}
private void handleLegacyMessage(MasterSecret masterSecret, TextSecureEnvelope envelope, Optional<Long> smsMessageId) {
EncryptingSmsDatabase smsDatabase = DatabaseFactory.getEncryptingSmsDatabase(context);
if (!smsMessageId.isPresent()) {
Pair<Long, Long> messageAndThreadId = insertPlaceholder(masterSecret, envelope);
smsDatabase.markAsLegacyVersion(messageAndThreadId.first);
MessageNotifier.updateNotification(context, masterSecret, messageAndThreadId.second);
} else {
smsDatabase.markAsLegacyVersion(smsMessageId.get());
}
}
private void handleDuplicateMessage(MasterSecret masterSecret, TextSecureEnvelope envelope, Optional<Long> smsMessageId) {
// Let's start ignoring these now
// SmsDatabase smsDatabase = DatabaseFactory.getEncryptingSmsDatabase(context);
//
// if (smsMessageId <= 0) {
// Pair<Long, Long> messageAndThreadId = insertPlaceholder(masterSecret, envelope);
// smsDatabase.markAsDecryptDuplicate(messageAndThreadId.first);
// MessageNotifier.updateNotification(context, masterSecret, messageAndThreadId.second);
// } else {
// smsDatabase.markAsDecryptDuplicate(smsMessageId);
// }
}
private void handleUntrustedIdentityMessage(MasterSecret masterSecret, TextSecureEnvelope envelope, Optional<Long> smsMessageId) {
try {
EncryptingSmsDatabase database = DatabaseFactory.getEncryptingSmsDatabase(context);
Recipients recipients = RecipientFactory.getRecipientsFromString(context, envelope.getSource(), false);
long recipientId = recipients.getPrimaryRecipient().getRecipientId();
PreKeyWhisperMessage whisperMessage = new PreKeyWhisperMessage(envelope.getLegacyMessage());
IdentityKey identityKey = whisperMessage.getIdentityKey();
String encoded = Base64.encodeBytes(envelope.getLegacyMessage());
IncomingTextMessage textMessage = new IncomingTextMessage(envelope.getSource(), envelope.getSourceDevice(),
envelope.getTimestamp(), encoded,
Optional.<TextSecureGroup>absent());
if (!smsMessageId.isPresent()) {
IncomingPreKeyBundleMessage bundleMessage = new IncomingPreKeyBundleMessage(textMessage, encoded);
Pair<Long, Long> messageAndThreadId = database.insertMessageInbox(masterSecret, bundleMessage);
database.setMismatchedIdentity(messageAndThreadId.first, recipientId, identityKey);
MessageNotifier.updateNotification(context, masterSecret, messageAndThreadId.second);
} else {
database.updateMessageBody(masterSecret, smsMessageId.get(), encoded);
database.markAsPreKeyBundle(smsMessageId.get());
database.setMismatchedIdentity(smsMessageId.get(), recipientId, identityKey);
}
} catch (InvalidMessageException | InvalidVersionException e) {
throw new AssertionError(e);
}
}
private Pair<Long, Long> insertPlaceholder(MasterSecret masterSecret, TextSecureEnvelope envelope) {
EncryptingSmsDatabase database = DatabaseFactory.getEncryptingSmsDatabase(context);
IncomingTextMessage textMessage = new IncomingTextMessage(envelope.getSource(), envelope.getSourceDevice(),
envelope.getTimestamp(), "",
Optional.<TextSecureGroup>absent());
textMessage = new IncomingEncryptedMessage(textMessage, "");
return database.insertMessageInbox(masterSecret, textMessage);
}
private Recipients getSyncMessageDestination(SentTranscriptMessage message) {
if (message.getMessage().getGroupInfo().isPresent()) {
return RecipientFactory.getRecipientsFromString(context, GroupUtil.getEncodedId(message.getMessage().getGroupInfo().get().getGroupId()), false);
} else {
return RecipientFactory.getRecipientsFromString(context, message.getDestination().get(), false);
}
}
}