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Support for multi-device.

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1) In addition to the Recipient interface, there is now
   RecipientDevice.  A Recipient can have multiple corresponding
   RecipientDevices.  All addressing is done to a Recipient, but
   crypto sessions and transport delivery are done to
   RecipientDevice.

2) The Push transport handles the discovery and session setup
   of additional Recipient devices.

3) Some internal rejiggering of Groups.
This commit is contained in:
Moxie Marlinspike
2014-02-02 19:38:06 -08:00
parent 49daa45dca
commit 0ace469d74
70 changed files with 1118 additions and 668 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
src/org/thoughtcrime/securesms/crypto/KeyExchangeProcessorV2.java
View File

@@ -8,6 +8,7 @@ import org.thoughtcrime.securesms.crypto.protocol.KeyExchangeMessage;
import org.thoughtcrime.securesms.crypto.protocol.KeyExchangeMessageV2;
import org.thoughtcrime.securesms.database.DatabaseFactory;
import org.thoughtcrime.securesms.recipients.Recipient;
import org.thoughtcrime.securesms.recipients.RecipientFactory;
import org.thoughtcrime.securesms.service.KeyCachingService;
import org.thoughtcrime.securesms.sms.MessageSender;
import org.thoughtcrime.securesms.sms.OutgoingKeyExchangeMessage;
@@ -24,6 +25,7 @@ import org.whispersystems.textsecure.crypto.ratchet.RatchetingSession;
import org.whispersystems.textsecure.push.PreKeyEntity;
import org.whispersystems.textsecure.storage.InvalidKeyIdException;
import org.whispersystems.textsecure.storage.PreKeyRecord;
import org.whispersystems.textsecure.storage.RecipientDevice;
import org.whispersystems.textsecure.storage.Session;
import org.whispersystems.textsecure.storage.SessionRecordV2;
import org.whispersystems.textsecure.util.Medium;
@@ -37,15 +39,16 @@ import org.whispersystems.textsecure.util.Medium;
public class KeyExchangeProcessorV2 extends KeyExchangeProcessor {
private Context context;
private Recipient recipient;
private RecipientDevice recipientDevice;
private MasterSecret masterSecret;
private SessionRecordV2 sessionRecord;
public KeyExchangeProcessorV2(Context context, MasterSecret masterSecret, Recipient recipient) {
public KeyExchangeProcessorV2(Context context, MasterSecret masterSecret, RecipientDevice recipientDevice)
{
this.context = context;
this.recipient = recipient;
this.recipientDevice = recipientDevice;
this.masterSecret = masterSecret;
this.sessionRecord = new SessionRecordV2(context, masterSecret, recipient);
this.sessionRecord = new SessionRecordV2(context, masterSecret, recipientDevice);
}
public boolean isTrusted(PreKeyWhisperMessage message) {
@@ -57,7 +60,8 @@ public class KeyExchangeProcessorV2 extends KeyExchangeProcessor {
}
public boolean isTrusted(IdentityKey identityKey) {
return DatabaseFactory.getIdentityDatabase(context).isValidIdentity(masterSecret, recipient,
return DatabaseFactory.getIdentityDatabase(context).isValidIdentity(masterSecret,
recipientDevice.getRecipientId(),
identityKey);
}
@@ -80,7 +84,7 @@ public class KeyExchangeProcessorV2 extends KeyExchangeProcessor {
Log.w("KeyExchangeProcessor", "Received pre-key with local key ID: " + preKeyId);
if (!PreKeyRecord.hasRecord(context, preKeyId) && Session.hasSession(context, masterSecret, recipient)) {
if (!PreKeyRecord.hasRecord(context, preKeyId) && SessionRecordV2.hasSession(context, masterSecret, recipientDevice)) {
Log.w("KeyExchangeProcessor", "We've already processed the prekey part, letting bundled message fall through...");
return;
}
@@ -97,7 +101,7 @@ public class KeyExchangeProcessorV2 extends KeyExchangeProcessor {
RatchetingSession.initializeSession(sessionRecord, ourBaseKey, theirBaseKey, ourEphemeralKey,
theirEphemeralKey, ourIdentityKey, theirIdentityKey);
Session.clearV1SessionFor(context, recipientDevice.getRecipient());
sessionRecord.save();
if (preKeyId != Medium.MAX_VALUE) {
@@ -105,7 +109,7 @@ public class KeyExchangeProcessorV2 extends KeyExchangeProcessor {
}
DatabaseFactory.getIdentityDatabase(context)
.saveIdentity(masterSecret, recipient, theirIdentityKey);
.saveIdentity(masterSecret, recipientDevice.getRecipientId(), theirIdentityKey);
}
public void processKeyExchangeMessage(PreKeyEntity message, long threadId)
@@ -129,7 +133,7 @@ public class KeyExchangeProcessorV2 extends KeyExchangeProcessor {
sessionRecord.save();
DatabaseFactory.getIdentityDatabase(context)
.saveIdentity(masterSecret, recipient, message.getIdentityKey());
.saveIdentity(masterSecret, recipientDevice.getRecipientId(), message.getIdentityKey());
broadcastSecurityUpdateEvent(context, threadId);
}
@@ -140,6 +144,10 @@ public class KeyExchangeProcessorV2 extends KeyExchangeProcessor {
{
try {
KeyExchangeMessageV2 message = (KeyExchangeMessageV2)_message;
Recipient recipient = RecipientFactory.getRecipientsForIds(context,
String.valueOf(recipientDevice.getRecipientId()),
false)
.getPrimaryRecipient();
Log.w("KeyExchangeProcessorV2", "Received key exchange with sequence: " + message.getSequence());
@@ -197,11 +205,11 @@ public class KeyExchangeProcessorV2 extends KeyExchangeProcessor {
ourIdentityKey, message.getIdentityKey());
sessionRecord.setSessionVersion(message.getVersion());
Session.clearV1SessionFor(context, recipient);
Session.clearV1SessionFor(context, recipientDevice.getRecipient());
sessionRecord.save();
DatabaseFactory.getIdentityDatabase(context)
.saveIdentity(masterSecret, recipient, message.getIdentityKey());
.saveIdentity(masterSecret, recipientDevice.getRecipientId(), message.getIdentityKey());
DecryptingQueue.scheduleRogueMessages(context, masterSecret, recipient);