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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
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53
src/org/thoughtcrime/securesms/crypto/DecryptingQueue.java
View File

@@ -46,7 +46,9 @@ import org.whispersystems.textsecure.crypto.InvalidVersionException;
import org.whispersystems.textsecure.crypto.MasterSecret;
import org.whispersystems.textsecure.crypto.SessionCipher;
import org.whispersystems.textsecure.push.IncomingPushMessage;
import org.whispersystems.textsecure.storage.RecipientDevice;
import org.whispersystems.textsecure.storage.Session;
import org.whispersystems.textsecure.storage.SessionRecordV2;
import org.whispersystems.textsecure.util.Hex;
import org.whispersystems.textsecure.util.Util;
@@ -78,11 +80,12 @@ public class DecryptingQueue {
}
public static void scheduleDecryption(Context context, MasterSecret masterSecret,
long messageId, long threadId, String originator,
long messageId, long threadId, String originator, int deviceId,
String body, boolean isSecureMessage, boolean isKeyExchange)
{
DecryptionWorkItem runnable = new DecryptionWorkItem(context, masterSecret, messageId, threadId,
originator, body, isSecureMessage, isKeyExchange);
originator, deviceId, body,
isSecureMessage, isKeyExchange);
executor.execute(runnable);
}
@@ -161,11 +164,13 @@ public class DecryptingQueue {
long threadId = record.getThreadId();
String body = record.getBody().getBody();
String originator = record.getIndividualRecipient().getNumber();
int originatorDeviceId = record.getRecipientDeviceId();
boolean isSecureMessage = record.isSecure();
boolean isKeyExchange = record.isKeyExchange();
scheduleDecryption(context, masterSecret, messageId, threadId,
originator, body, isSecureMessage, isKeyExchange);
originator, originatorDeviceId, body,
isSecureMessage, isKeyExchange);
}
private static class PushDecryptionWorkItem implements Runnable {
@@ -186,15 +191,16 @@ public class DecryptingQueue {
public void run() {
try {
Recipients recipients = RecipientFactory.getRecipientsFromString(context, message.getSource(), false);
Recipient recipient = recipients.getPrimaryRecipient();
Recipients recipients = RecipientFactory.getRecipientsFromString(context, message.getSource(), false);
Recipient recipient = recipients.getPrimaryRecipient();
RecipientDevice recipientDevice = new RecipientDevice(recipient.getRecipientId(), message.getSourceDevice());
if (!Session.hasSession(context, masterSecret, recipient)) {
if (!SessionRecordV2.hasSession(context, masterSecret, recipientDevice)) {
sendResult(PushReceiver.RESULT_NO_SESSION);
return;
}
SessionCipher sessionCipher = SessionCipher.createFor(context, masterSecret, recipient);
SessionCipher sessionCipher = SessionCipher.createFor(context, masterSecret, recipientDevice);
byte[] plaintextBody = sessionCipher.decrypt(message.getBody());
message = message.withBody(plaintextBody);
@@ -251,10 +257,11 @@ public class DecryptingQueue {
MmsDatabase database = DatabaseFactory.getMmsDatabase(context);
try {
String messageFrom = pdu.getFrom().getString();
Recipients recipients = RecipientFactory.getRecipientsFromString(context, messageFrom, false);
Recipient recipient = recipients.getPrimaryRecipient();
byte[] ciphertextPduBytes = getEncryptedData();
String messageFrom = pdu.getFrom().getString();
Recipients recipients = RecipientFactory.getRecipientsFromString(context, messageFrom, false);
Recipient recipient = recipients.getPrimaryRecipient();
RecipientDevice recipientDevice = new RecipientDevice(recipient.getRecipientId(), RecipientDevice.DEFAULT_DEVICE_ID);
byte[] ciphertextPduBytes = getEncryptedData();
if (ciphertextPduBytes == null) {
Log.w("DecryptingQueue", "No encoded PNG data found on parts.");
@@ -272,7 +279,7 @@ public class DecryptingQueue {
Log.w("DecryptingQueue", "Decrypting: " + Hex.toString(ciphertextPduBytes));
TextTransport transportDetails = new TextTransport();
SessionCipher sessionCipher = SessionCipher.createFor(context, masterSecret, recipient);
SessionCipher sessionCipher = SessionCipher.createFor(context, masterSecret, recipientDevice);
byte[] decodedCiphertext = transportDetails.getDecodedMessage(ciphertextPduBytes);
try {
@@ -322,11 +329,13 @@ public class DecryptingQueue {
private final MasterSecret masterSecret;
private final String body;
private final String originator;
private final int deviceId;
private final boolean isSecureMessage;
private final boolean isKeyExchange;
public DecryptionWorkItem(Context context, MasterSecret masterSecret, long messageId, long threadId,
String originator, String body, boolean isSecureMessage, boolean isKeyExchange)
String originator, int deviceId, String body, boolean isSecureMessage,
boolean isKeyExchange)
{
this.context = context;
this.messageId = messageId;
@@ -334,6 +343,7 @@ public class DecryptingQueue {
this.masterSecret = masterSecret;
this.body = body;
this.originator = originator;
this.deviceId = deviceId;
this.isSecureMessage = isSecureMessage;
this.isKeyExchange = isKeyExchange;
}
@@ -343,8 +353,9 @@ public class DecryptingQueue {
String plaintextBody;
try {
Recipients recipients = RecipientFactory.getRecipientsFromString(context, originator, false);
Recipient recipient = recipients.getPrimaryRecipient();
Recipients recipients = RecipientFactory.getRecipientsFromString(context, originator, false);
Recipient recipient = recipients.getPrimaryRecipient();
RecipientDevice recipientDevice = new RecipientDevice(recipient.getRecipientId(), deviceId);
if (!Session.hasSession(context, masterSecret, recipient)) {
database.markAsNoSession(messageId);
@@ -352,7 +363,7 @@ public class DecryptingQueue {
}
SmsTransportDetails transportDetails = new SmsTransportDetails();
SessionCipher sessionCipher = SessionCipher.createFor(context, masterSecret, recipient);
SessionCipher sessionCipher = SessionCipher.createFor(context, masterSecret, recipientDevice);
byte[] decodedCiphertext = transportDetails.getDecodedMessage(body.getBytes());
byte[] paddedPlaintext = sessionCipher.decrypt(decodedCiphertext);
@@ -401,9 +412,10 @@ public class DecryptingQueue {
private void handleKeyExchangeProcessing(String plaintxtBody) {
if (TextSecurePreferences.isAutoRespondKeyExchangeEnabled(context)) {
try {
Recipient recipient = new Recipient(null, originator, null, null);
KeyExchangeMessage message = KeyExchangeMessage.createFor(plaintxtBody);
KeyExchangeProcessor processor = KeyExchangeProcessor.createFor(context, masterSecret, recipient, message);
Recipient recipient = RecipientFactory.getRecipientsFromString(context, originator, false).getPrimaryRecipient();
RecipientDevice recipientDevice = new RecipientDevice(recipient.getRecipientId(), deviceId);
KeyExchangeMessage message = KeyExchangeMessage.createFor(plaintxtBody);
KeyExchangeProcessor processor = KeyExchangeProcessor.createFor(context, masterSecret, recipientDevice, message);
if (processor.isStale(message)) {
DatabaseFactory.getEncryptingSmsDatabase(context).markAsStaleKeyExchange(messageId);
@@ -420,6 +432,9 @@ public class DecryptingQueue {
} catch (InvalidMessageException e) {
Log.w("DecryptingQueue", e);
DatabaseFactory.getEncryptingSmsDatabase(context).markAsCorruptKeyExchange(messageId);
} catch (RecipientFormattingException e) {
Log.w("DecryptingQueue", e);
DatabaseFactory.getEncryptingSmsDatabase(context).markAsCorruptKeyExchange(messageId);
}
}
}