nmode's Git Repositories - signal-cli/blob - src/main/java/cli/Manager.java

   1 /**
   2  * Copyright (C) 2015 AsamK
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package cli;
  18
  19 import com.fasterxml.jackson.annotation.JsonAutoDetect;
  20 import com.fasterxml.jackson.annotation.PropertyAccessor;
  21 import com.fasterxml.jackson.databind.DeserializationFeature;
  22 import com.fasterxml.jackson.databind.JsonNode;
  23 import com.fasterxml.jackson.databind.ObjectMapper;
  24 import com.fasterxml.jackson.databind.SerializationFeature;
  25 import com.fasterxml.jackson.databind.node.ObjectNode;
  26 import org.whispersystems.libaxolotl.*;
  27 import org.whispersystems.libaxolotl.ecc.Curve;
  28 import org.whispersystems.libaxolotl.ecc.ECKeyPair;
  29 import org.whispersystems.libaxolotl.state.PreKeyRecord;
  30 import org.whispersystems.libaxolotl.state.SignedPreKeyRecord;
  31 import org.whispersystems.libaxolotl.util.KeyHelper;
  32 import org.whispersystems.libaxolotl.util.Medium;
  33 import org.whispersystems.libaxolotl.util.guava.Optional;
  34 import org.whispersystems.textsecure.api.TextSecureAccountManager;
  35 import org.whispersystems.textsecure.api.TextSecureMessagePipe;
  36 import org.whispersystems.textsecure.api.TextSecureMessageReceiver;
  37 import org.whispersystems.textsecure.api.TextSecureMessageSender;
  38 import org.whispersystems.textsecure.api.crypto.TextSecureCipher;
  39 import org.whispersystems.textsecure.api.messages.*;
  40 import org.whispersystems.textsecure.api.push.TextSecureAddress;
  41 import org.whispersystems.textsecure.api.push.TrustStore;
  42 import org.whispersystems.textsecure.api.push.exceptions.EncapsulatedExceptions;
  43 import org.whispersystems.textsecure.api.util.InvalidNumberException;
  44 import org.whispersystems.textsecure.api.util.PhoneNumberFormatter;
  45
  46 import java.io.*;
  47 import java.nio.file.Files;
  48 import java.nio.file.Paths;
  49 import java.util.*;
  50 import java.util.concurrent.TimeUnit;
  51 import java.util.concurrent.TimeoutException;
  52
  53 class Manager implements TextSecure {
  54     private final static String URL = "https://textsecure-service.whispersystems.org";
  55     private final static TrustStore TRUST_STORE = new WhisperTrustStore();
  56
  57     public final static String PROJECT_NAME = Manager.class.getPackage().getImplementationTitle();
  58     public final static String PROJECT_VERSION = Manager.class.getPackage().getImplementationVersion();
  59     private final static String USER_AGENT = PROJECT_NAME + " " + PROJECT_VERSION;
  60
  61     private final static String settingsPath = System.getProperty("user.home") + "/.config/textsecure";
  62     private final static String dataPath = settingsPath + "/data";
  63     private final static String attachmentsPath = settingsPath + "/attachments";
  64
  65     private final ObjectMapper jsonProcessot = new ObjectMapper();
  66     private String username;
  67     private String password;
  68     private String signalingKey;
  69     private int preKeyIdOffset;
  70     private int nextSignedPreKeyId;
  71
  72     private boolean registered = false;
  73
  74     private JsonAxolotlStore axolotlStore;
  75     private TextSecureAccountManager accountManager;
  76     private JsonGroupStore groupStore;
  77
  78     public Manager(String username) {
  79         this.username = username;
  80         jsonProcessot.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.NONE); // disable autodetect
  81         jsonProcessot.enable(SerializationFeature.INDENT_OUTPUT); // for pretty print, you can disable it.
  82         jsonProcessot.enable(SerializationFeature.WRITE_NULL_MAP_VALUES);
  83         jsonProcessot.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
  84     }
  85
  86     public String getFileName() {
  87         new File(dataPath).mkdirs();
  88         return dataPath + "/" + username;
  89     }
  90
  91     public boolean userExists() {
  92         File f = new File(getFileName());
  93         return !(!f.exists() || f.isDirectory());
  94     }
  95
  96     public boolean userHasKeys() {
  97         return axolotlStore != null;
  98     }
  99
 100     private JsonNode getNotNullNode(JsonNode parent, String name) throws InvalidObjectException {
 101         JsonNode node = parent.get(name);
 102         if (node == null) {
 103             throw new InvalidObjectException(String.format("Incorrect file format: expected parameter %s not found ", name));
 104         }
 105
 106         return node;
 107     }
 108
 109     public void load() throws IOException, InvalidKeyException {
 110         JsonNode rootNode = jsonProcessot.readTree(new File(getFileName()));
 111
 112         username = getNotNullNode(rootNode, "username").asText();
 113         password = getNotNullNode(rootNode, "password").asText();
 114         if (rootNode.has("signalingKey")) {
 115             signalingKey = getNotNullNode(rootNode, "signalingKey").asText();
 116         }
 117         if (rootNode.has("preKeyIdOffset")) {
 118             preKeyIdOffset = getNotNullNode(rootNode, "preKeyIdOffset").asInt(0);
 119         } else {
 120             preKeyIdOffset = 0;
 121         }
 122         if (rootNode.has("nextSignedPreKeyId")) {
 123             nextSignedPreKeyId = getNotNullNode(rootNode, "nextSignedPreKeyId").asInt();
 124         } else {
 125             nextSignedPreKeyId = 0;
 126         }
 127         axolotlStore = jsonProcessot.convertValue(getNotNullNode(rootNode, "axolotlStore"), JsonAxolotlStore.class); //new JsonAxolotlStore(in.getJSONObject("axolotlStore"));
 128         registered = getNotNullNode(rootNode, "registered").asBoolean();
 129         JsonNode groupStoreNode = rootNode.get("groupStore");
 130         if (groupStoreNode != null) {
 131             groupStore = jsonProcessot.convertValue(groupStoreNode, JsonGroupStore.class);
 132         }
 133         if (groupStore == null) {
 134             groupStore = new JsonGroupStore();
 135         }
 136         accountManager = new TextSecureAccountManager(URL, TRUST_STORE, username, password, USER_AGENT);
 137     }
 138
 139     public void save() {
 140         ObjectNode rootNode = jsonProcessot.createObjectNode();
 141         rootNode.put("username", username)
 142                 .put("password", password)
 143                 .put("signalingKey", signalingKey)
 144                 .put("preKeyIdOffset", preKeyIdOffset)
 145                 .put("nextSignedPreKeyId", nextSignedPreKeyId)
 146                 .put("registered", registered)
 147                 .putPOJO("axolotlStore", axolotlStore)
 148                 .putPOJO("groupStore", groupStore)
 149         ;
 150         try {
 151             jsonProcessot.writeValue(new File(getFileName()), rootNode);
 152         } catch (Exception e) {
 153             System.err.println(String.format("Error saving file: %s", e.getMessage()));
 154         }
 155     }
 156
 157     public void createNewIdentity() {
 158         IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 159         int registrationId = KeyHelper.generateRegistrationId(false);
 160         axolotlStore = new JsonAxolotlStore(identityKey, registrationId);
 161         groupStore = new JsonGroupStore();
 162         registered = false;
 163     }
 164
 165     public boolean isRegistered() {
 166         return registered;
 167     }
 168
 169     public void register(boolean voiceVerication) throws IOException {
 170         password = Util.getSecret(18);
 171
 172         accountManager = new TextSecureAccountManager(URL, TRUST_STORE, username, password, USER_AGENT);
 173
 174         if (voiceVerication)
 175             accountManager.requestVoiceVerificationCode();
 176         else
 177             accountManager.requestSmsVerificationCode();
 178
 179         registered = false;
 180     }
 181
 182     private static final int BATCH_SIZE = 100;
 183
 184     private List<PreKeyRecord> generatePreKeys() {
 185         List<PreKeyRecord> records = new LinkedList<>();
 186
 187         for (int i = 0; i < BATCH_SIZE; i++) {
 188             int preKeyId = (preKeyIdOffset + i) % Medium.MAX_VALUE;
 189             ECKeyPair keyPair = Curve.generateKeyPair();
 190             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 191
 192             axolotlStore.storePreKey(preKeyId, record);
 193             records.add(record);
 194         }
 195
 196         preKeyIdOffset = (preKeyIdOffset + BATCH_SIZE + 1) % Medium.MAX_VALUE;
 197         return records;
 198     }
 199
 200     private PreKeyRecord generateLastResortPreKey() {
 201         if (axolotlStore.containsPreKey(Medium.MAX_VALUE)) {
 202             try {
 203                 return axolotlStore.loadPreKey(Medium.MAX_VALUE);
 204             } catch (InvalidKeyIdException e) {
 205                 axolotlStore.removePreKey(Medium.MAX_VALUE);
 206             }
 207         }
 208
 209         ECKeyPair keyPair = Curve.generateKeyPair();
 210         PreKeyRecord record = new PreKeyRecord(Medium.MAX_VALUE, keyPair);
 211
 212         axolotlStore.storePreKey(Medium.MAX_VALUE, record);
 213
 214         return record;
 215     }
 216
 217     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 218         try {
 219             ECKeyPair keyPair = Curve.generateKeyPair();
 220             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 221             SignedPreKeyRecord record = new SignedPreKeyRecord(nextSignedPreKeyId, System.currentTimeMillis(), keyPair, signature);
 222
 223             axolotlStore.storeSignedPreKey(nextSignedPreKeyId, record);
 224             nextSignedPreKeyId = (nextSignedPreKeyId + 1) % Medium.MAX_VALUE;
 225
 226             return record;
 227         } catch (InvalidKeyException e) {
 228             throw new AssertionError(e);
 229         }
 230     }
 231
 232     public void verifyAccount(String verificationCode) throws IOException {
 233         verificationCode = verificationCode.replace("-", "");
 234         signalingKey = Util.getSecret(52);
 235         accountManager.verifyAccountWithCode(verificationCode, signalingKey, axolotlStore.getLocalRegistrationId(), false);
 236
 237         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 238         registered = true;
 239
 240         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 241
 242         PreKeyRecord lastResortKey = generateLastResortPreKey();
 243
 244         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(axolotlStore.getIdentityKeyPair());
 245
 246         accountManager.setPreKeys(axolotlStore.getIdentityKeyPair().getPublicKey(), lastResortKey, signedPreKeyRecord, oneTimePreKeys);
 247     }
 248
 249
 250     private static List<TextSecureAttachment> getTextSecureAttachments(List<String> attachments) throws AttachmentInvalidException {
 251         List<TextSecureAttachment> textSecureAttachments = null;
 252         if (attachments != null) {
 253             textSecureAttachments = new ArrayList<>(attachments.size());
 254             for (String attachment : attachments) {
 255                 try {
 256                     textSecureAttachments.add(createAttachment(attachment));
 257                 } catch (IOException e) {
 258                     throw new AttachmentInvalidException(attachment, e);
 259                 }
 260             }
 261         }
 262         return textSecureAttachments;
 263     }
 264
 265     private static TextSecureAttachmentStream createAttachment(String attachment) throws IOException {
 266         File attachmentFile = new File(attachment);
 267         InputStream attachmentStream = new FileInputStream(attachmentFile);
 268         final long attachmentSize = attachmentFile.length();
 269         String mime = Files.probeContentType(Paths.get(attachment));
 270         return new TextSecureAttachmentStream(attachmentStream, mime, attachmentSize, null);
 271     }
 272
 273     @Override
 274     public void sendGroupMessage(String messageText, List<String> attachments,
 275                                  byte[] groupId)
 276             throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 277         final TextSecureDataMessage.Builder messageBuilder = TextSecureDataMessage.newBuilder().withBody(messageText);
 278         if (attachments != null) {
 279             messageBuilder.withAttachments(getTextSecureAttachments(attachments));
 280         }
 281         if (groupId != null) {
 282             TextSecureGroup group = TextSecureGroup.newBuilder(TextSecureGroup.Type.DELIVER)
 283                     .withId(groupId)
 284                     .build();
 285             messageBuilder.asGroupMessage(group);
 286         }
 287         TextSecureDataMessage message = messageBuilder.build();
 288
 289         sendMessage(message, getGroupInfo(groupId).members);
 290     }
 291
 292     public void sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, EncapsulatedExceptions {
 293         TextSecureGroup group = TextSecureGroup.newBuilder(TextSecureGroup.Type.QUIT)
 294                 .withId(groupId)
 295                 .build();
 296
 297         TextSecureDataMessage message = TextSecureDataMessage.newBuilder()
 298                 .asGroupMessage(group)
 299                 .build();
 300
 301         sendMessage(message, getGroupInfo(groupId).members);
 302     }
 303
 304     public byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<String> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 305         GroupInfo g;
 306         if (groupId == null) {
 307             // Create new group
 308             g = new GroupInfo(Util.getSecretBytes(16));
 309             g.members.add(username);
 310         } else {
 311             g = getGroupInfo(groupId);
 312         }
 313
 314         if (name != null) {
 315             g.name = name;
 316         }
 317
 318         if (members != null) {
 319             for (String member : members) {
 320                 try {
 321                     g.members.add(canonicalizeNumber(member));
 322                 } catch (InvalidNumberException e) {
 323                     System.err.println("Failed to add member \"" + member + "\" to group: " + e.getMessage());
 324                     System.err.println("Aborting…");
 325                     System.exit(1);
 326                 }
 327             }
 328         }
 329
 330         TextSecureGroup.Builder group = TextSecureGroup.newBuilder(TextSecureGroup.Type.UPDATE)
 331                 .withId(g.groupId)
 332                 .withName(g.name)
 333                 .withMembers(new ArrayList<>(g.members));
 334
 335         if (avatarFile != null) {
 336             try {
 337                 group.withAvatar(createAttachment(avatarFile));
 338                 // TODO
 339                 g.avatarId = 0;
 340             } catch (IOException e) {
 341                 throw new AttachmentInvalidException(avatarFile, e);
 342             }
 343         }
 344
 345         setGroupInfo(g);
 346
 347         TextSecureDataMessage message = TextSecureDataMessage.newBuilder()
 348                 .asGroupMessage(group.build())
 349                 .build();
 350
 351         sendMessage(message, g.members);
 352         return g.groupId;
 353     }
 354
 355     @Override
 356     public void sendMessage(String message, List<String> attachments, String recipient)
 357             throws EncapsulatedExceptions, AttachmentInvalidException, IOException {
 358         List<String> recipients = new ArrayList<>(1);
 359         recipients.add(recipient);
 360         sendMessage(message, attachments, recipients);
 361     }
 362
 363     public void sendMessage(String messageText, List<String> attachments,
 364                             Collection<String> recipients)
 365             throws IOException, EncapsulatedExceptions, AttachmentInvalidException {
 366         final TextSecureDataMessage.Builder messageBuilder = TextSecureDataMessage.newBuilder().withBody(messageText);
 367         if (attachments != null) {
 368             messageBuilder.withAttachments(getTextSecureAttachments(attachments));
 369         }
 370         TextSecureDataMessage message = messageBuilder.build();
 371
 372         sendMessage(message, recipients);
 373     }
 374
 375     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions {
 376         TextSecureDataMessage message = TextSecureDataMessage.newBuilder()
 377                 .asEndSessionMessage()
 378                 .build();
 379
 380         sendMessage(message, recipients);
 381     }
 382
 383     private void sendMessage(TextSecureDataMessage message, Collection<String> recipients)
 384             throws IOException, EncapsulatedExceptions {
 385         TextSecureMessageSender messageSender = new TextSecureMessageSender(URL, TRUST_STORE, username, password,
 386                 axolotlStore, USER_AGENT, Optional.<TextSecureMessageSender.EventListener>absent());
 387
 388         Set<TextSecureAddress> recipientsTS = new HashSet<>(recipients.size());
 389         for (String recipient : recipients) {
 390             try {
 391                 recipientsTS.add(getPushAddress(recipient));
 392             } catch (InvalidNumberException e) {
 393                 System.err.println("Failed to add recipient \"" + recipient + "\": " + e.getMessage());
 394                 System.err.println("Aborting sending.");
 395                 return;
 396             }
 397         }
 398
 399         messageSender.sendMessage(new ArrayList<>(recipientsTS), message);
 400
 401         if (message.isEndSession()) {
 402             for (TextSecureAddress recipient : recipientsTS) {
 403                 handleEndSession(recipient.getNumber());
 404             }
 405         }
 406         save();
 407     }
 408
 409     private TextSecureContent decryptMessage(TextSecureEnvelope envelope) {
 410         TextSecureCipher cipher = new TextSecureCipher(new TextSecureAddress(username), axolotlStore);
 411         try {
 412             return cipher.decrypt(envelope);
 413         } catch (Exception e) {
 414             // TODO handle all exceptions
 415             e.printStackTrace();
 416             return null;
 417         }
 418     }
 419
 420     private void handleEndSession(String source) {
 421         axolotlStore.deleteAllSessions(source);
 422     }
 423
 424     public interface ReceiveMessageHandler {
 425         void handleMessage(TextSecureEnvelope envelope, TextSecureContent decryptedContent, GroupInfo group);
 426     }
 427
 428     public void receiveMessages(int timeoutSeconds, boolean returnOnTimeout, ReceiveMessageHandler handler) throws IOException {
 429         final TextSecureMessageReceiver messageReceiver = new TextSecureMessageReceiver(URL, TRUST_STORE, username, password, signalingKey, USER_AGENT);
 430         TextSecureMessagePipe messagePipe = null;
 431
 432         try {
 433             messagePipe = messageReceiver.createMessagePipe();
 434
 435             while (true) {
 436                 TextSecureEnvelope envelope;
 437                 TextSecureContent content = null;
 438                 GroupInfo group = null;
 439                 try {
 440                     envelope = messagePipe.read(timeoutSeconds, TimeUnit.SECONDS);
 441                     if (!envelope.isReceipt()) {
 442                         content = decryptMessage(envelope);
 443                         if (content != null) {
 444                             if (content.getDataMessage().isPresent()) {
 445                                 TextSecureDataMessage message = content.getDataMessage().get();
 446                                 if (message.getGroupInfo().isPresent()) {
 447                                     TextSecureGroup groupInfo = message.getGroupInfo().get();
 448                                     switch (groupInfo.getType()) {
 449                                         case UPDATE:
 450                                             try {
 451                                                 group = groupStore.getGroup(groupInfo.getGroupId());
 452                                             } catch (GroupNotFoundException e) {
 453                                                 group = new GroupInfo(groupInfo.getGroupId());
 454                                             }
 455
 456                                             if (groupInfo.getAvatar().isPresent()) {
 457                                                 TextSecureAttachment avatar = groupInfo.getAvatar().get();
 458                                                 if (avatar.isPointer()) {
 459                                                     long avatarId = avatar.asPointer().getId();
 460                                                     try {
 461                                                         retrieveAttachment(avatar.asPointer());
 462                                                         group.avatarId = avatarId;
 463                                                     } catch (IOException | InvalidMessageException e) {
 464                                                         System.err.println("Failed to retrieve group avatar (" + avatarId + "): " + e.getMessage());
 465                                                     }
 466                                                 }
 467                                             }
 468
 469                                             if (groupInfo.getName().isPresent()) {
 470                                                 group.name = groupInfo.getName().get();
 471                                             }
 472
 473                                             if (groupInfo.getMembers().isPresent()) {
 474                                                 group.members.addAll(groupInfo.getMembers().get());
 475                                             }
 476
 477                                             groupStore.updateGroup(group);
 478                                             break;
 479                                         case DELIVER:
 480                                             try {
 481                                                 group = groupStore.getGroup(groupInfo.getGroupId());
 482                                             } catch (GroupNotFoundException e) {
 483                                             }
 484                                             break;
 485                                         case QUIT:
 486                                             try {
 487                                                 group = groupStore.getGroup(groupInfo.getGroupId());
 488                                                 group.members.remove(envelope.getSource());
 489                                             } catch (GroupNotFoundException e) {
 490                                             }
 491                                             break;
 492                                     }
 493                                 }
 494                                 if (message.isEndSession()) {
 495                                     handleEndSession(envelope.getSource());
 496                                 }
 497                                 if (message.getAttachments().isPresent()) {
 498                                     for (TextSecureAttachment attachment : message.getAttachments().get()) {
 499                                         if (attachment.isPointer()) {
 500                                             try {
 501                                                 retrieveAttachment(attachment.asPointer());
 502                                             } catch (IOException | InvalidMessageException e) {
 503                                                 System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getId() + "): " + e.getMessage());
 504                                             }
 505                                         }
 506                                     }
 507                                 }
 508                             }
 509                         }
 510                     }
 511                     save();
 512                     handler.handleMessage(envelope, content, group);
 513                 } catch (TimeoutException e) {
 514                     if (returnOnTimeout)
 515                         return;
 516                 } catch (InvalidVersionException e) {
 517                     System.err.println("Ignoring error: " + e.getMessage());
 518                 }
 519             }
 520         } finally {
 521             if (messagePipe != null)
 522                 messagePipe.shutdown();
 523         }
 524     }
 525
 526     public File getAttachmentFile(long attachmentId) {
 527         return new File(attachmentsPath + "/" + attachmentId);
 528     }
 529
 530     private File retrieveAttachment(TextSecureAttachmentPointer pointer) throws IOException, InvalidMessageException {
 531         final TextSecureMessageReceiver messageReceiver = new TextSecureMessageReceiver(URL, TRUST_STORE, username, password, signalingKey, USER_AGENT);
 532
 533         File tmpFile = File.createTempFile("ts_attach_" + pointer.getId(), ".tmp");
 534         InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile);
 535
 536         new File(attachmentsPath).mkdirs();
 537         File outputFile = getAttachmentFile(pointer.getId());
 538         OutputStream output = null;
 539         try {
 540             output = new FileOutputStream(outputFile);
 541             byte[] buffer = new byte[4096];
 542             int read;
 543
 544             while ((read = input.read(buffer)) != -1) {
 545                 output.write(buffer, 0, read);
 546             }
 547         } catch (FileNotFoundException e) {
 548             e.printStackTrace();
 549             return null;
 550         } finally {
 551             if (output != null) {
 552                 output.close();
 553                 output = null;
 554             }
 555             if (!tmpFile.delete()) {
 556                 System.err.println("Failed to delete temp file: " + tmpFile);
 557             }
 558         }
 559         if (pointer.getPreview().isPresent()) {
 560             File previewFile = new File(outputFile + ".preview");
 561             try {
 562                 output = new FileOutputStream(previewFile);
 563                 byte[] preview = pointer.getPreview().get();
 564                 output.write(preview, 0, preview.length);
 565             } catch (FileNotFoundException e) {
 566                 e.printStackTrace();
 567                 return null;
 568             } finally {
 569                 if (output != null) {
 570                     output.close();
 571                 }
 572             }
 573         }
 574         return outputFile;
 575     }
 576
 577     private String canonicalizeNumber(String number) throws InvalidNumberException {
 578         String localNumber = username;
 579         return PhoneNumberFormatter.formatNumber(number, localNumber);
 580     }
 581
 582     private TextSecureAddress getPushAddress(String number) throws InvalidNumberException {
 583         String e164number = canonicalizeNumber(number);
 584         return new TextSecureAddress(e164number);
 585     }
 586
 587     private GroupInfo getGroupInfo(byte[] groupId) throws GroupNotFoundException {
 588         return groupStore.getGroup(groupId);
 589     }
 590
 591     private void setGroupInfo(GroupInfo group) {
 592         groupStore.updateGroup(group);
 593     }
 594
 595     @Override
 596     public boolean isRemote() {
 597         return false;
 598     }
 599 }