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

   1 /*
   2   Copyright (C) 2015-2020 AsamK and contributors
   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 org.asamk.signal.manager;
  18
  19 import org.asamk.Signal;
  20 import org.asamk.signal.AttachmentInvalidException;
  21 import org.asamk.signal.GroupNotFoundException;
  22 import org.asamk.signal.NotAGroupMemberException;
  23 import org.asamk.signal.TrustLevel;
  24 import org.asamk.signal.UserAlreadyExists;
  25 import org.asamk.signal.storage.SignalAccount;
  26 import org.asamk.signal.storage.contacts.ContactInfo;
  27 import org.asamk.signal.storage.groups.GroupInfo;
  28 import org.asamk.signal.storage.groups.JsonGroupStore;
  29 import org.asamk.signal.storage.protocol.JsonIdentityKeyStore;
  30 import org.asamk.signal.storage.threads.ThreadInfo;
  31 import org.asamk.signal.util.IOUtils;
  32 import org.asamk.signal.util.Util;
  33 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  34 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  35 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  36 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  37 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  38 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  39 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  40 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  41 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  42 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  43 import org.signal.libsignal.metadata.SelfSendException;
  44 import org.whispersystems.libsignal.IdentityKey;
  45 import org.whispersystems.libsignal.IdentityKeyPair;
  46 import org.whispersystems.libsignal.InvalidKeyException;
  47 import org.whispersystems.libsignal.InvalidMessageException;
  48 import org.whispersystems.libsignal.InvalidVersionException;
  49 import org.whispersystems.libsignal.ecc.Curve;
  50 import org.whispersystems.libsignal.ecc.ECKeyPair;
  51 import org.whispersystems.libsignal.ecc.ECPublicKey;
  52 import org.whispersystems.libsignal.state.PreKeyRecord;
  53 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  54 import org.whispersystems.libsignal.util.KeyHelper;
  55 import org.whispersystems.libsignal.util.Medium;
  56 import org.whispersystems.libsignal.util.guava.Optional;
  57 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  58 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  59 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  60 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  61 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  62 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccess;
  63 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  64 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  65 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  66 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  67 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  68 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
  69 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  70 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  71 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  72 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
  73 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
  74 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
  75 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
  76 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
  77 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
  78 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
  79 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
  80 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
  81 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
  82 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
  83 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
  84 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
  85 import org.whispersystems.signalservice.api.push.ContactTokenDetails;
  86 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  87 import org.whispersystems.signalservice.api.push.exceptions.AuthorizationFailedException;
  88 import org.whispersystems.signalservice.api.push.exceptions.EncapsulatedExceptions;
  89 import org.whispersystems.signalservice.api.push.exceptions.NetworkFailureException;
  90 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
  91 import org.whispersystems.signalservice.api.util.InvalidNumberException;
  92 import org.whispersystems.signalservice.api.util.SleepTimer;
  93 import org.whispersystems.signalservice.api.util.StreamDetails;
  94 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
  95 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
  96 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
  97 import org.whispersystems.util.Base64;
  98
  99 import java.io.File;
 100 import java.io.FileInputStream;
 101 import java.io.FileNotFoundException;
 102 import java.io.FileOutputStream;
 103 import java.io.IOException;
 104 import java.io.InputStream;
 105 import java.io.OutputStream;
 106 import java.net.URI;
 107 import java.nio.file.Files;
 108 import java.nio.file.Paths;
 109 import java.nio.file.StandardCopyOption;
 110 import java.util.ArrayList;
 111 import java.util.Arrays;
 112 import java.util.Collection;
 113 import java.util.Collections;
 114 import java.util.Date;
 115 import java.util.HashSet;
 116 import java.util.LinkedList;
 117 import java.util.List;
 118 import java.util.Locale;
 119 import java.util.Map;
 120 import java.util.Objects;
 121 import java.util.Set;
 122 import java.util.concurrent.TimeUnit;
 123 import java.util.concurrent.TimeoutException;
 124
 125 public class Manager implements Signal {
 126
 127     private final String settingsPath;
 128     private final String dataPath;
 129     private final String attachmentsPath;
 130     private final String avatarsPath;
 131     private final SleepTimer timer = new UptimeSleepTimer();
 132
 133     private SignalAccount account;
 134     private String username;
 135     private SignalServiceAccountManager accountManager;
 136     private SignalServiceMessagePipe messagePipe = null;
 137     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 138
 139     public Manager(String username, String settingsPath) {
 140         this.username = username;
 141         this.settingsPath = settingsPath;
 142         this.dataPath = this.settingsPath + "/data";
 143         this.attachmentsPath = this.settingsPath + "/attachments";
 144         this.avatarsPath = this.settingsPath + "/avatars";
 145
 146     }
 147
 148     public String getUsername() {
 149         return username;
 150     }
 151
 152     private SignalServiceAddress getSelfAddress() {
 153         return new SignalServiceAddress(null, username);
 154     }
 155
 156     private SignalServiceAccountManager getSignalServiceAccountManager() {
 157         return new SignalServiceAccountManager(BaseConfig.serviceConfiguration, null, account.getUsername(), account.getPassword(), account.getDeviceId(), BaseConfig.USER_AGENT, timer);
 158     }
 159
 160     private IdentityKey getIdentity() {
 161         return account.getSignalProtocolStore().getIdentityKeyPair().getPublicKey();
 162     }
 163
 164     public int getDeviceId() {
 165         return account.getDeviceId();
 166     }
 167
 168     private String getMessageCachePath() {
 169         return this.dataPath + "/" + username + ".d/msg-cache";
 170     }
 171
 172     private String getMessageCachePath(String sender) {
 173         return getMessageCachePath() + "/" + sender.replace("/", "_");
 174     }
 175
 176     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 177         String cachePath = getMessageCachePath(sender);
 178         IOUtils.createPrivateDirectories(cachePath);
 179         return new File(cachePath + "/" + now + "_" + timestamp);
 180     }
 181
 182     public boolean userHasKeys() {
 183         return account != null && account.getSignalProtocolStore() != null;
 184     }
 185
 186     public void init() throws IOException {
 187         if (!SignalAccount.userExists(dataPath, username)) {
 188             return;
 189         }
 190         account = SignalAccount.load(dataPath, username);
 191
 192         migrateLegacyConfigs();
 193
 194         accountManager = getSignalServiceAccountManager();
 195         try {
 196             if (account.isRegistered() && accountManager.getPreKeysCount() < BaseConfig.PREKEY_MINIMUM_COUNT) {
 197                 refreshPreKeys();
 198                 account.save();
 199             }
 200         } catch (AuthorizationFailedException e) {
 201             System.err.println("Authorization failed, was the number registered elsewhere?");
 202             throw e;
 203         }
 204     }
 205
 206     private void migrateLegacyConfigs() {
 207         // Copy group avatars that were previously stored in the attachments folder
 208         // to the new avatar folder
 209         if (JsonGroupStore.groupsWithLegacyAvatarId.size() > 0) {
 210             for (GroupInfo g : JsonGroupStore.groupsWithLegacyAvatarId) {
 211                 File avatarFile = getGroupAvatarFile(g.groupId);
 212                 File attachmentFile = getAttachmentFile(g.getAvatarId());
 213                 if (!avatarFile.exists() && attachmentFile.exists()) {
 214                     try {
 215                         IOUtils.createPrivateDirectories(avatarsPath);
 216                         Files.copy(attachmentFile.toPath(), avatarFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 217                     } catch (Exception e) {
 218                         // Ignore
 219                     }
 220                 }
 221             }
 222             JsonGroupStore.groupsWithLegacyAvatarId.clear();
 223             account.save();
 224         }
 225         if (account.getProfileKey() == null) {
 226             // Old config file, creating new profile key
 227             account.setProfileKey(KeyUtils.createProfileKey());
 228             account.save();
 229         }
 230     }
 231
 232     private void createNewIdentity() throws IOException {
 233         IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 234         int registrationId = KeyHelper.generateRegistrationId(false);
 235         if (username == null) {
 236             account = SignalAccount.createTemporaryAccount(identityKey, registrationId);
 237         } else {
 238             byte[] profileKey = KeyUtils.createProfileKey();
 239             account = SignalAccount.create(dataPath, username, identityKey, registrationId, profileKey);
 240             account.save();
 241         }
 242     }
 243
 244     public boolean isRegistered() {
 245         return account != null && account.isRegistered();
 246     }
 247
 248     public void register(boolean voiceVerification) throws IOException {
 249         if (account == null) {
 250             createNewIdentity();
 251         }
 252         account.setPassword(KeyUtils.createPassword());
 253         accountManager = getSignalServiceAccountManager();
 254
 255         if (voiceVerification) {
 256             accountManager.requestVoiceVerificationCode(Locale.getDefault(), Optional.<String>absent(), Optional.<String>absent());
 257         } else {
 258             accountManager.requestSmsVerificationCode(false, Optional.<String>absent(), Optional.<String>absent());
 259         }
 260
 261         account.setRegistered(false);
 262         account.save();
 263     }
 264
 265     public void updateAccountAttributes() throws IOException {
 266         accountManager.setAccountAttributes(account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, account.getRegistrationLockPin(), getSelfUnidentifiedAccessKey(), false);
 267     }
 268
 269     public void setProfileName(String name) throws IOException {
 270         accountManager.setProfileName(account.getProfileKey(), name);
 271     }
 272
 273     public void setProfileAvatar(File avatar) throws IOException {
 274         final StreamDetails streamDetails = Utils.createStreamDetailsFromFile(avatar);
 275         accountManager.setProfileAvatar(account.getProfileKey(), streamDetails);
 276         streamDetails.getStream().close();
 277     }
 278
 279     public void removeProfileAvatar() throws IOException {
 280         accountManager.setProfileAvatar(account.getProfileKey(), null);
 281     }
 282
 283     public void unregister() throws IOException {
 284         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 285         // If this is the master device, other users can't send messages to this number anymore.
 286         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 287         accountManager.setGcmId(Optional.<String>absent());
 288
 289         account.setRegistered(false);
 290         account.save();
 291     }
 292
 293     public String getDeviceLinkUri() throws TimeoutException, IOException {
 294         if (account == null) {
 295             createNewIdentity();
 296         }
 297         account.setPassword(KeyUtils.createPassword());
 298         accountManager = getSignalServiceAccountManager();
 299         String uuid = accountManager.getNewDeviceUuid();
 300
 301         return Utils.createDeviceLinkUri(new Utils.DeviceLinkInfo(uuid, getIdentity().getPublicKey()));
 302     }
 303
 304     public void finishDeviceLink(String deviceName) throws IOException, InvalidKeyException, TimeoutException, UserAlreadyExists {
 305         account.setSignalingKey(KeyUtils.createSignalingKey());
 306         SignalServiceAccountManager.NewDeviceRegistrationReturn ret = accountManager.finishNewDeviceRegistration(account.getSignalProtocolStore().getIdentityKeyPair(), account.getSignalingKey(), false, true, account.getSignalProtocolStore().getLocalRegistrationId(), deviceName);
 307
 308         username = ret.getNumber();
 309         // TODO do this check before actually registering
 310         if (SignalAccount.userExists(dataPath, username)) {
 311             throw new UserAlreadyExists(username, SignalAccount.getFileName(dataPath, username));
 312         }
 313
 314         // Create new account with the synced identity
 315         byte[] profileKey = ret.getProfileKey();
 316         if (profileKey == null) {
 317             profileKey = KeyUtils.createProfileKey();
 318         }
 319         account = SignalAccount.createLinkedAccount(dataPath, username, account.getPassword(), ret.getDeviceId(), ret.getIdentity(), account.getSignalProtocolStore().getLocalRegistrationId(), account.getSignalingKey(), profileKey);
 320
 321         refreshPreKeys();
 322
 323         requestSyncGroups();
 324         requestSyncContacts();
 325         requestSyncBlocked();
 326         requestSyncConfiguration();
 327
 328         account.save();
 329     }
 330
 331     public List<DeviceInfo> getLinkedDevices() throws IOException {
 332         List<DeviceInfo> devices = accountManager.getDevices();
 333         account.setMultiDevice(devices.size() > 1);
 334         account.save();
 335         return devices;
 336     }
 337
 338     public void removeLinkedDevices(int deviceId) throws IOException {
 339         accountManager.removeDevice(deviceId);
 340         List<DeviceInfo> devices = accountManager.getDevices();
 341         account.setMultiDevice(devices.size() > 1);
 342         account.save();
 343     }
 344
 345     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 346         Utils.DeviceLinkInfo info = Utils.parseDeviceLinkUri(linkUri);
 347
 348         addDevice(info.deviceIdentifier, info.deviceKey);
 349     }
 350
 351     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 352         IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 353         String verificationCode = accountManager.getNewDeviceVerificationCode();
 354
 355         accountManager.addDevice(deviceIdentifier, deviceKey, identityKeyPair, Optional.of(account.getProfileKey()), verificationCode);
 356         account.setMultiDevice(true);
 357         account.save();
 358     }
 359
 360     private List<PreKeyRecord> generatePreKeys() {
 361         List<PreKeyRecord> records = new ArrayList<>(BaseConfig.PREKEY_BATCH_SIZE);
 362
 363         final int offset = account.getPreKeyIdOffset();
 364         for (int i = 0; i < BaseConfig.PREKEY_BATCH_SIZE; i++) {
 365             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 366             ECKeyPair keyPair = Curve.generateKeyPair();
 367             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 368
 369             records.add(record);
 370         }
 371
 372         account.addPreKeys(records);
 373         account.save();
 374
 375         return records;
 376     }
 377
 378     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 379         try {
 380             ECKeyPair keyPair = Curve.generateKeyPair();
 381             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 382             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(), System.currentTimeMillis(), keyPair, signature);
 383
 384             account.addSignedPreKey(record);
 385             account.save();
 386
 387             return record;
 388         } catch (InvalidKeyException e) {
 389             throw new AssertionError(e);
 390         }
 391     }
 392
 393     public void verifyAccount(String verificationCode, String pin) throws IOException {
 394         verificationCode = verificationCode.replace("-", "");
 395         account.setSignalingKey(KeyUtils.createSignalingKey());
 396         // TODO make unrestricted unidentified access configurable
 397         accountManager.verifyAccountWithCode(verificationCode, account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, pin, getSelfUnidentifiedAccessKey(), false);
 398
 399         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 400         account.setRegistered(true);
 401         account.setRegistrationLockPin(pin);
 402
 403         refreshPreKeys();
 404         account.save();
 405     }
 406
 407     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 408         accountManager.setPin(pin);
 409         if (pin.isPresent()) {
 410             account.setRegistrationLockPin(pin.get());
 411         } else {
 412             account.setRegistrationLockPin(null);
 413         }
 414         account.save();
 415     }
 416
 417     private void refreshPreKeys() throws IOException {
 418         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 419         final IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 420         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 421
 422         accountManager.setPreKeys(getIdentity(), signedPreKeyRecord, oneTimePreKeys);
 423     }
 424
 425     private SignalServiceMessageReceiver getMessageReceiver() {
 426         return new SignalServiceMessageReceiver(BaseConfig.serviceConfiguration, null, username, account.getPassword(), account.getDeviceId(), account.getSignalingKey(), BaseConfig.USER_AGENT, null, timer);
 427     }
 428
 429     private SignalServiceMessageSender getMessageSender() {
 430         return new SignalServiceMessageSender(BaseConfig.serviceConfiguration, null, username, account.getPassword(),
 431                 account.getDeviceId(), account.getSignalProtocolStore(), BaseConfig.USER_AGENT, account.isMultiDevice(), Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.<SignalServiceMessageSender.EventListener>absent());
 432     }
 433
 434     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 435         File file = getGroupAvatarFile(groupId);
 436         if (!file.exists()) {
 437             return Optional.absent();
 438         }
 439
 440         return Optional.of(Utils.createAttachment(file));
 441     }
 442
 443     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 444         File file = getContactAvatarFile(number);
 445         if (!file.exists()) {
 446             return Optional.absent();
 447         }
 448
 449         return Optional.of(Utils.createAttachment(file));
 450     }
 451
 452     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 453         GroupInfo g = account.getGroupStore().getGroup(groupId);
 454         if (g == null) {
 455             throw new GroupNotFoundException(groupId);
 456         }
 457         for (String member : g.members) {
 458             if (member.equals(this.username)) {
 459                 return g;
 460             }
 461         }
 462         throw new NotAGroupMemberException(groupId, g.name);
 463     }
 464
 465     public List<GroupInfo> getGroups() {
 466         return account.getGroupStore().getGroups();
 467     }
 468
 469     @Override
 470     public void sendGroupMessage(String messageText, List<String> attachments,
 471                                  byte[] groupId)
 472             throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 473         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 474         if (attachments != null) {
 475             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 476         }
 477         if (groupId != null) {
 478             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 479                     .withId(groupId)
 480                     .build();
 481             messageBuilder.asGroupMessage(group);
 482         }
 483         ThreadInfo thread = account.getThreadStore().getThread(Base64.encodeBytes(groupId));
 484         if (thread != null) {
 485             messageBuilder.withExpiration(thread.messageExpirationTime);
 486         }
 487
 488         final GroupInfo g = getGroupForSending(groupId);
 489
 490         // Don't send group message to ourself
 491         final List<String> membersSend = new ArrayList<>(g.members);
 492         membersSend.remove(this.username);
 493         sendMessageLegacy(messageBuilder, membersSend);
 494     }
 495
 496     public void sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, EncapsulatedExceptions {
 497         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 498                 .withId(groupId)
 499                 .build();
 500
 501         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 502                 .asGroupMessage(group);
 503
 504         final GroupInfo g = getGroupForSending(groupId);
 505         g.members.remove(this.username);
 506         account.getGroupStore().updateGroup(g);
 507
 508         sendMessageLegacy(messageBuilder, g.members);
 509     }
 510
 511     private byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<String> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 512         GroupInfo g;
 513         if (groupId == null) {
 514             // Create new group
 515             g = new GroupInfo(KeyUtils.createGroupId());
 516             g.members.add(username);
 517         } else {
 518             g = getGroupForSending(groupId);
 519         }
 520
 521         if (name != null) {
 522             g.name = name;
 523         }
 524
 525         if (members != null) {
 526             Set<String> newMembers = new HashSet<>();
 527             for (String member : members) {
 528                 try {
 529                     member = Utils.canonicalizeNumber(member, username);
 530                 } catch (InvalidNumberException e) {
 531                     System.err.println("Failed to add member \"" + member + "\" to group: " + e.getMessage());
 532                     System.err.println("Aborting…");
 533                     System.exit(1);
 534                 }
 535                 if (g.members.contains(member)) {
 536                     continue;
 537                 }
 538                 newMembers.add(member);
 539                 g.members.add(member);
 540             }
 541             final List<ContactTokenDetails> contacts = accountManager.getContacts(newMembers);
 542             if (contacts.size() != newMembers.size()) {
 543                 // Some of the new members are not registered on Signal
 544                 for (ContactTokenDetails contact : contacts) {
 545                     newMembers.remove(contact.getNumber());
 546                 }
 547                 System.err.println("Failed to add members " + Util.join(", ", newMembers) + " to group: Not registered on Signal");
 548                 System.err.println("Aborting…");
 549                 System.exit(1);
 550             }
 551         }
 552
 553         if (avatarFile != null) {
 554             IOUtils.createPrivateDirectories(avatarsPath);
 555             File aFile = getGroupAvatarFile(g.groupId);
 556             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 557         }
 558
 559         account.getGroupStore().updateGroup(g);
 560
 561         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 562
 563         // Don't send group message to ourself
 564         final List<String> membersSend = new ArrayList<>(g.members);
 565         membersSend.remove(this.username);
 566         sendMessageLegacy(messageBuilder, membersSend);
 567         return g.groupId;
 568     }
 569
 570     private void sendUpdateGroupMessage(byte[] groupId, String recipient) throws IOException, EncapsulatedExceptions {
 571         if (groupId == null) {
 572             return;
 573         }
 574         GroupInfo g = getGroupForSending(groupId);
 575
 576         if (!g.members.contains(recipient)) {
 577             return;
 578         }
 579
 580         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 581
 582         // Send group message only to the recipient who requested it
 583         final List<String> membersSend = new ArrayList<>();
 584         membersSend.add(recipient);
 585         sendMessageLegacy(messageBuilder, membersSend);
 586     }
 587
 588     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfo g) {
 589         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 590                 .withId(g.groupId)
 591                 .withName(g.name)
 592                 .withMembers(new ArrayList<>(g.getMembers()));
 593
 594         File aFile = getGroupAvatarFile(g.groupId);
 595         if (aFile.exists()) {
 596             try {
 597                 group.withAvatar(Utils.createAttachment(aFile));
 598             } catch (IOException e) {
 599                 throw new AttachmentInvalidException(aFile.toString(), e);
 600             }
 601         }
 602
 603         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 604                 .asGroupMessage(group.build());
 605
 606         ThreadInfo thread = account.getThreadStore().getThread(Base64.encodeBytes(g.groupId));
 607         if (thread != null) {
 608             messageBuilder.withExpiration(thread.messageExpirationTime);
 609         }
 610
 611         return messageBuilder;
 612     }
 613
 614     private void sendGroupInfoRequest(byte[] groupId, String recipient) throws IOException, EncapsulatedExceptions {
 615         if (groupId == null) {
 616             return;
 617         }
 618
 619         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 620                 .withId(groupId);
 621
 622         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 623                 .asGroupMessage(group.build());
 624
 625         ThreadInfo thread = account.getThreadStore().getThread(Base64.encodeBytes(groupId));
 626         if (thread != null) {
 627             messageBuilder.withExpiration(thread.messageExpirationTime);
 628         }
 629
 630         // Send group info request message to the recipient who sent us a message with this groupId
 631         final List<String> membersSend = new ArrayList<>();
 632         membersSend.add(recipient);
 633         sendMessageLegacy(messageBuilder, membersSend);
 634     }
 635
 636     @Override
 637     public void sendMessage(String message, List<String> attachments, String recipient)
 638             throws EncapsulatedExceptions, AttachmentInvalidException, IOException {
 639         List<String> recipients = new ArrayList<>(1);
 640         recipients.add(recipient);
 641         sendMessage(message, attachments, recipients);
 642     }
 643
 644     @Override
 645     public void sendMessage(String messageText, List<String> attachments,
 646                             List<String> recipients)
 647             throws IOException, EncapsulatedExceptions, AttachmentInvalidException {
 648         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 649         if (attachments != null) {
 650             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 651         }
 652         messageBuilder.withProfileKey(account.getProfileKey());
 653         sendMessageLegacy(messageBuilder, recipients);
 654     }
 655
 656     @Override
 657     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions {
 658         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 659                 .asEndSessionMessage();
 660
 661         sendMessageLegacy(messageBuilder, recipients);
 662     }
 663
 664     @Override
 665     public String getContactName(String number) {
 666         ContactInfo contact = account.getContactStore().getContact(number);
 667         if (contact == null) {
 668             return "";
 669         } else {
 670             return contact.name;
 671         }
 672     }
 673
 674     @Override
 675     public void setContactName(String number, String name) {
 676         ContactInfo contact = account.getContactStore().getContact(number);
 677         if (contact == null) {
 678             contact = new ContactInfo();
 679             contact.number = number;
 680             System.err.println("Add contact " + number + " named " + name);
 681         } else {
 682             System.err.println("Updating contact " + number + " name " + contact.name + " -> " + name);
 683         }
 684         contact.name = name;
 685         account.getContactStore().updateContact(contact);
 686         account.save();
 687     }
 688
 689     @Override
 690     public List<byte[]> getGroupIds() {
 691         List<GroupInfo> groups = getGroups();
 692         List<byte[]> ids = new ArrayList<>(groups.size());
 693         for (GroupInfo group : groups) {
 694             ids.add(group.groupId);
 695         }
 696         return ids;
 697     }
 698
 699     @Override
 700     public String getGroupName(byte[] groupId) {
 701         GroupInfo group = getGroup(groupId);
 702         if (group == null) {
 703             return "";
 704         } else {
 705             return group.name;
 706         }
 707     }
 708
 709     @Override
 710     public List<String> getGroupMembers(byte[] groupId) {
 711         GroupInfo group = getGroup(groupId);
 712         if (group == null) {
 713             return new ArrayList<>();
 714         } else {
 715             return new ArrayList<>(group.members);
 716         }
 717     }
 718
 719     @Override
 720     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 721         if (groupId.length == 0) {
 722             groupId = null;
 723         }
 724         if (name.isEmpty()) {
 725             name = null;
 726         }
 727         if (members.size() == 0) {
 728             members = null;
 729         }
 730         if (avatar.isEmpty()) {
 731             avatar = null;
 732         }
 733         return sendUpdateGroupMessage(groupId, name, members, avatar);
 734     }
 735
 736     /**
 737      * Change the expiration timer for a thread (number of groupId)
 738      *
 739      * @param numberOrGroupId
 740      * @param messageExpirationTimer
 741      */
 742     public void setExpirationTimer(String numberOrGroupId, int messageExpirationTimer) {
 743         ThreadInfo thread = account.getThreadStore().getThread(numberOrGroupId);
 744         thread.messageExpirationTime = messageExpirationTimer;
 745         account.getThreadStore().updateThread(thread);
 746     }
 747
 748     private void requestSyncGroups() throws IOException {
 749         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 750         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 751         try {
 752             sendSyncMessage(message);
 753         } catch (UntrustedIdentityException e) {
 754             e.printStackTrace();
 755         }
 756     }
 757
 758     private void requestSyncContacts() throws IOException {
 759         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 760         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 761         try {
 762             sendSyncMessage(message);
 763         } catch (UntrustedIdentityException e) {
 764             e.printStackTrace();
 765         }
 766     }
 767
 768     private void requestSyncBlocked() throws IOException {
 769         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
 770         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 771         try {
 772             sendSyncMessage(message);
 773         } catch (UntrustedIdentityException e) {
 774             e.printStackTrace();
 775         }
 776     }
 777
 778     private void requestSyncConfiguration() throws IOException {
 779         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
 780         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 781         try {
 782             sendSyncMessage(message);
 783         } catch (UntrustedIdentityException e) {
 784             e.printStackTrace();
 785         }
 786     }
 787
 788     private byte[] getSelfUnidentifiedAccessKey() {
 789         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
 790     }
 791
 792     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) {
 793         // TODO implement
 794         return null;
 795     }
 796
 797     private Optional<UnidentifiedAccessPair> getAccessForSync() {
 798         // TODO implement
 799         return Optional.absent();
 800     }
 801
 802     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) {
 803         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
 804         for (SignalServiceAddress recipient : recipients) {
 805             result.add(Optional.<UnidentifiedAccessPair>absent());
 806         }
 807         return result;
 808     }
 809
 810     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) {
 811         // TODO implement
 812         return Optional.absent();
 813     }
 814
 815     private void sendSyncMessage(SignalServiceSyncMessage message)
 816             throws IOException, UntrustedIdentityException {
 817         SignalServiceMessageSender messageSender = getMessageSender();
 818         try {
 819             messageSender.sendMessage(message, getAccessForSync());
 820         } catch (UntrustedIdentityException e) {
 821             account.getSignalProtocolStore().saveIdentity(e.getIdentifier(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 822             throw e;
 823         }
 824     }
 825
 826     /**
 827      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
 828      */
 829     private void sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<String> recipients)
 830             throws EncapsulatedExceptions, IOException {
 831         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
 832
 833         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
 834         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
 835         List<NetworkFailureException> networkExceptions = new LinkedList<>();
 836
 837         for (SendMessageResult result : results) {
 838             if (result.isUnregisteredFailure()) {
 839                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getNumber().get(), null));
 840             } else if (result.isNetworkFailure()) {
 841                 networkExceptions.add(new NetworkFailureException(result.getAddress().getNumber().get(), null));
 842             } else if (result.getIdentityFailure() != null) {
 843                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getNumber().get(), result.getIdentityFailure().getIdentityKey()));
 844             }
 845         }
 846         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
 847             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
 848         }
 849     }
 850
 851     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<String> recipients)
 852             throws IOException {
 853         Set<SignalServiceAddress> recipientsTS = Utils.getSignalServiceAddresses(recipients, username);
 854         if (recipientsTS == null) {
 855             account.save();
 856             return Collections.emptyList();
 857         }
 858
 859         SignalServiceDataMessage message = null;
 860         try {
 861             SignalServiceMessageSender messageSender = getMessageSender();
 862
 863             message = messageBuilder.build();
 864             if (message.getGroupInfo().isPresent()) {
 865                 try {
 866                     final boolean isRecipientUpdate = false;
 867                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipientsTS), getAccessFor(recipientsTS), isRecipientUpdate, message);
 868                     for (SendMessageResult r : result) {
 869                         if (r.getIdentityFailure() != null) {
 870                             account.getSignalProtocolStore().saveIdentity(r.getAddress().getNumber().get(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
 871                         }
 872                     }
 873                     return result;
 874                 } catch (UntrustedIdentityException e) {
 875                     account.getSignalProtocolStore().saveIdentity(e.getIdentifier(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 876                     return Collections.emptyList();
 877                 }
 878             } else if (recipientsTS.size() == 1 && recipientsTS.contains(getSelfAddress())) {
 879                 SignalServiceAddress recipient = getSelfAddress();
 880                 final Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
 881                 SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
 882                         message.getTimestamp(),
 883                         message,
 884                         message.getExpiresInSeconds(),
 885                         Collections.singletonMap(recipient, unidentifiedAccess.isPresent()),
 886                         false);
 887                 SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
 888
 889                 List<SendMessageResult> results = new ArrayList<>(recipientsTS.size());
 890                 try {
 891                     messageSender.sendMessage(syncMessage, unidentifiedAccess);
 892                 } catch (UntrustedIdentityException e) {
 893                     account.getSignalProtocolStore().saveIdentity(e.getIdentifier(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 894                     results.add(SendMessageResult.identityFailure(recipient, e.getIdentityKey()));
 895                 }
 896                 return results;
 897             } else {
 898                 // Send to all individually, so sync messages are sent correctly
 899                 List<SendMessageResult> results = new ArrayList<>(recipientsTS.size());
 900                 for (SignalServiceAddress address : recipientsTS) {
 901                     ThreadInfo thread = account.getThreadStore().getThread(address.getNumber().get());
 902                     if (thread != null) {
 903                         messageBuilder.withExpiration(thread.messageExpirationTime);
 904                     } else {
 905                         messageBuilder.withExpiration(0);
 906                     }
 907                     message = messageBuilder.build();
 908                     try {
 909                         SendMessageResult result = messageSender.sendMessage(address, getAccessFor(address), message);
 910                         results.add(result);
 911                     } catch (UntrustedIdentityException e) {
 912                         account.getSignalProtocolStore().saveIdentity(e.getIdentifier(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 913                         results.add(SendMessageResult.identityFailure(address, e.getIdentityKey()));
 914                     }
 915                 }
 916                 return results;
 917             }
 918         } finally {
 919             if (message != null && message.isEndSession()) {
 920                 for (SignalServiceAddress recipient : recipientsTS) {
 921                     handleEndSession(recipient.getNumber().get());
 922                 }
 923             }
 924             account.save();
 925         }
 926     }
 927
 928     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, ProtocolUntrustedIdentityException, SelfSendException, UnsupportedDataMessageException {
 929         SignalServiceCipher cipher = new SignalServiceCipher(getSelfAddress(), account.getSignalProtocolStore(), Utils.getCertificateValidator());
 930         try {
 931             return cipher.decrypt(envelope);
 932         } catch (ProtocolUntrustedIdentityException e) {
 933             // TODO We don't get the new untrusted identity from ProtocolUntrustedIdentityException anymore ... we need to get it from somewhere else
 934 //            account.getSignalProtocolStore().saveIdentity(e.getSender(), e.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
 935             throw e;
 936         }
 937     }
 938
 939     private void handleEndSession(String source) {
 940         account.getSignalProtocolStore().deleteAllSessions(source);
 941     }
 942
 943     private void handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, String source, SignalServiceAddress destination, boolean ignoreAttachments) {
 944         String threadId;
 945         if (message.getGroupInfo().isPresent()) {
 946             SignalServiceGroup groupInfo = message.getGroupInfo().get();
 947             threadId = Base64.encodeBytes(groupInfo.getGroupId());
 948             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
 949             switch (groupInfo.getType()) {
 950                 case UPDATE:
 951                     if (group == null) {
 952                         group = new GroupInfo(groupInfo.getGroupId());
 953                     }
 954
 955                     if (groupInfo.getAvatar().isPresent()) {
 956                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
 957                         if (avatar.isPointer()) {
 958                             try {
 959                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
 960                             } catch (IOException | InvalidMessageException e) {
 961                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getId() + "): " + e.getMessage());
 962                             }
 963                         }
 964                     }
 965
 966                     if (groupInfo.getName().isPresent()) {
 967                         group.name = groupInfo.getName().get();
 968                     }
 969
 970                     if (groupInfo.getMembers().isPresent()) {
 971                         group.addMembers(groupInfo.getMembers().get());
 972                     }
 973
 974                     account.getGroupStore().updateGroup(group);
 975                     break;
 976                 case DELIVER:
 977                     if (group == null) {
 978                         try {
 979                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
 980                         } catch (IOException | EncapsulatedExceptions e) {
 981                             e.printStackTrace();
 982                         }
 983                     }
 984                     break;
 985                 case QUIT:
 986                     if (group == null) {
 987                         try {
 988                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
 989                         } catch (IOException | EncapsulatedExceptions e) {
 990                             e.printStackTrace();
 991                         }
 992                     } else {
 993                         group.members.remove(source);
 994                         account.getGroupStore().updateGroup(group);
 995                     }
 996                     break;
 997                 case REQUEST_INFO:
 998                     if (group != null) {
 999                         try {
1000                             sendUpdateGroupMessage(groupInfo.getGroupId(), source);
1001                         } catch (IOException | EncapsulatedExceptions e) {
1002                             e.printStackTrace();
1003                         } catch (NotAGroupMemberException e) {
1004                             // We have left this group, so don't send a group update message
1005                         }
1006                     }
1007                     break;
1008             }
1009         } else {
1010             if (isSync) {
1011                 threadId = destination.getNumber().get();
1012             } else {
1013                 threadId = source;
1014             }
1015         }
1016         if (message.isEndSession()) {
1017             handleEndSession(isSync ? destination.getNumber().get() : source);
1018         }
1019         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1020             ThreadInfo thread = account.getThreadStore().getThread(threadId);
1021             if (thread == null) {
1022                 thread = new ThreadInfo();
1023                 thread.id = threadId;
1024             }
1025             if (thread.messageExpirationTime != message.getExpiresInSeconds()) {
1026                 thread.messageExpirationTime = message.getExpiresInSeconds();
1027                 account.getThreadStore().updateThread(thread);
1028             }
1029         }
1030         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1031             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1032                 if (attachment.isPointer()) {
1033                     try {
1034                         retrieveAttachment(attachment.asPointer());
1035                     } catch (IOException | InvalidMessageException e) {
1036                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getId() + "): " + e.getMessage());
1037                     }
1038                 }
1039             }
1040         }
1041         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1042             if (source.equals(username)) {
1043                 this.account.setProfileKey(message.getProfileKey().get());
1044             }
1045             ContactInfo contact = account.getContactStore().getContact(source);
1046             if (contact == null) {
1047                 contact = new ContactInfo();
1048                 contact.number = source;
1049             }
1050             contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1051         }
1052         if (message.getPreviews().isPresent()) {
1053             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1054             for (SignalServiceDataMessage.Preview preview : previews) {
1055                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1056                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1057                     try {
1058                         retrieveAttachment(attachment);
1059                     } catch (IOException | InvalidMessageException e) {
1060                         System.err.println("Failed to retrieve attachment (" + attachment.getId() + "): " + e.getMessage());
1061                     }
1062                 }
1063             }
1064         }
1065     }
1066
1067     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1068         final File cachePath = new File(getMessageCachePath());
1069         if (!cachePath.exists()) {
1070             return;
1071         }
1072         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1073             if (!dir.isDirectory()) {
1074                 continue;
1075             }
1076
1077             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1078                 if (!fileEntry.isFile()) {
1079                     continue;
1080                 }
1081                 SignalServiceEnvelope envelope;
1082                 try {
1083                     envelope = Utils.loadEnvelope(fileEntry);
1084                     if (envelope == null) {
1085                         continue;
1086                     }
1087                 } catch (IOException e) {
1088                     e.printStackTrace();
1089                     continue;
1090                 }
1091                 SignalServiceContent content = null;
1092                 if (!envelope.isReceipt()) {
1093                     try {
1094                         content = decryptMessage(envelope);
1095                     } catch (Exception e) {
1096                         continue;
1097                     }
1098                     handleMessage(envelope, content, ignoreAttachments);
1099                 }
1100                 account.save();
1101                 handler.handleMessage(envelope, content, null);
1102                 try {
1103                     Files.delete(fileEntry.toPath());
1104                 } catch (IOException e) {
1105                     System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1106                 }
1107             }
1108             // Try to delete directory if empty
1109             dir.delete();
1110         }
1111     }
1112
1113     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
1114         retryFailedReceivedMessages(handler, ignoreAttachments);
1115         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1116
1117         try {
1118             if (messagePipe == null) {
1119                 messagePipe = messageReceiver.createMessagePipe();
1120             }
1121
1122             while (true) {
1123                 SignalServiceEnvelope envelope;
1124                 SignalServiceContent content = null;
1125                 Exception exception = null;
1126                 final long now = new Date().getTime();
1127                 try {
1128                     envelope = messagePipe.read(timeout, unit, new SignalServiceMessagePipe.MessagePipeCallback() {
1129                         @Override
1130                         public void onMessage(SignalServiceEnvelope envelope) {
1131                             // store message on disk, before acknowledging receipt to the server
1132                             try {
1133                                 File cacheFile = getMessageCacheFile(envelope.getSourceE164().get(), now, envelope.getTimestamp());
1134                                 Utils.storeEnvelope(envelope, cacheFile);
1135                             } catch (IOException e) {
1136                                 System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
1137                             }
1138                         }
1139                     });
1140                 } catch (TimeoutException e) {
1141                     if (returnOnTimeout)
1142                         return;
1143                     continue;
1144                 } catch (InvalidVersionException e) {
1145                     System.err.println("Ignoring error: " + e.getMessage());
1146                     continue;
1147                 }
1148                 if (!envelope.isReceipt()) {
1149                     try {
1150                         content = decryptMessage(envelope);
1151                     } catch (Exception e) {
1152                         exception = e;
1153                     }
1154                     handleMessage(envelope, content, ignoreAttachments);
1155                 }
1156                 account.save();
1157                 handler.handleMessage(envelope, content, exception);
1158                 if (!(exception instanceof ProtocolUntrustedIdentityException)) {
1159                     File cacheFile = null;
1160                     try {
1161                         cacheFile = getMessageCacheFile(envelope.getSourceE164().get(), now, envelope.getTimestamp());
1162                         Files.delete(cacheFile.toPath());
1163                         // Try to delete directory if empty
1164                         new File(getMessageCachePath()).delete();
1165                     } catch (IOException e) {
1166                         System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1167                     }
1168                 }
1169             }
1170         } finally {
1171             if (messagePipe != null) {
1172                 messagePipe.shutdown();
1173                 messagePipe = null;
1174             }
1175         }
1176     }
1177
1178     private void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1179         if (content != null) {
1180             SignalServiceAddress sender;
1181             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1182                 sender = envelope.getSourceAddress();
1183             } else {
1184                 sender = content.getSender();
1185             }
1186             if (content.getDataMessage().isPresent()) {
1187                 SignalServiceDataMessage message = content.getDataMessage().get();
1188                 handleSignalServiceDataMessage(message, false, sender.getNumber().get(), getSelfAddress(), ignoreAttachments);
1189             }
1190             if (content.getSyncMessage().isPresent()) {
1191                 account.setMultiDevice(true);
1192                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1193                 if (syncMessage.getSent().isPresent()) {
1194                     SentTranscriptMessage message = syncMessage.getSent().get();
1195                     handleSignalServiceDataMessage(message.getMessage(), true, sender.getNumber().get(), message.getDestination().orNull(), ignoreAttachments);
1196                 }
1197                 if (syncMessage.getRequest().isPresent()) {
1198                     RequestMessage rm = syncMessage.getRequest().get();
1199                     if (rm.isContactsRequest()) {
1200                         try {
1201                             sendContacts();
1202                         } catch (UntrustedIdentityException | IOException e) {
1203                             e.printStackTrace();
1204                         }
1205                     }
1206                     if (rm.isGroupsRequest()) {
1207                         try {
1208                             sendGroups();
1209                         } catch (UntrustedIdentityException | IOException e) {
1210                             e.printStackTrace();
1211                         }
1212                     }
1213                     // TODO Handle rm.isBlockedListRequest(); rm.isConfigurationRequest();
1214                 }
1215                 if (syncMessage.getGroups().isPresent()) {
1216                     File tmpFile = null;
1217                     try {
1218                         tmpFile = IOUtils.createTempFile();
1219                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1220                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1221                             DeviceGroup g;
1222                             while ((g = s.read()) != null) {
1223                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1224                                 if (syncGroup == null) {
1225                                     syncGroup = new GroupInfo(g.getId());
1226                                 }
1227                                 if (g.getName().isPresent()) {
1228                                     syncGroup.name = g.getName().get();
1229                                 }
1230                                 syncGroup.addMembers(g.getMembers());
1231                                 syncGroup.active = g.isActive();
1232                                 if (g.getColor().isPresent()) {
1233                                     syncGroup.color = g.getColor().get();
1234                                 }
1235
1236                                 if (g.getAvatar().isPresent()) {
1237                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1238                                 }
1239                                 account.getGroupStore().updateGroup(syncGroup);
1240                             }
1241                         }
1242                     } catch (Exception e) {
1243                         e.printStackTrace();
1244                     } finally {
1245                         if (tmpFile != null) {
1246                             try {
1247                                 Files.delete(tmpFile.toPath());
1248                             } catch (IOException e) {
1249                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1250                             }
1251                         }
1252                     }
1253                 }
1254                 if (syncMessage.getBlockedList().isPresent()) {
1255                     // TODO store list of blocked numbers
1256                 }
1257                 if (syncMessage.getContacts().isPresent()) {
1258                     File tmpFile = null;
1259                     try {
1260                         tmpFile = IOUtils.createTempFile();
1261                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1262                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1263                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1264                             if (contactsMessage.isComplete()) {
1265                                 account.getContactStore().clear();
1266                             }
1267                             DeviceContact c;
1268                             while ((c = s.read()) != null) {
1269                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1270                                     account.setProfileKey(c.getProfileKey().get());
1271                                 }
1272                                 ContactInfo contact = account.getContactStore().getContact(c.getAddress().getNumber().get());
1273                                 if (contact == null) {
1274                                     contact = new ContactInfo();
1275                                     contact.number = c.getAddress().getNumber().get();
1276                                 }
1277                                 if (c.getName().isPresent()) {
1278                                     contact.name = c.getName().get();
1279                                 }
1280                                 if (c.getColor().isPresent()) {
1281                                     contact.color = c.getColor().get();
1282                                 }
1283                                 if (c.getProfileKey().isPresent()) {
1284                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get());
1285                                 }
1286                                 if (c.getVerified().isPresent()) {
1287                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1288                                     account.getSignalProtocolStore().saveIdentity(verifiedMessage.getDestination().getNumber().get(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1289                                 }
1290                                 if (c.getExpirationTimer().isPresent()) {
1291                                     ThreadInfo thread = account.getThreadStore().getThread(c.getAddress().getNumber().get());
1292                                     if (thread == null) {
1293                                         thread = new ThreadInfo();
1294                                         thread.id = c.getAddress().getNumber().get();
1295                                     }
1296                                     thread.messageExpirationTime = c.getExpirationTimer().get();
1297                                     account.getThreadStore().updateThread(thread);
1298                                 }
1299                                 if (c.isBlocked()) {
1300                                     // TODO store list of blocked numbers
1301                                 }
1302                                 account.getContactStore().updateContact(contact);
1303
1304                                 if (c.getAvatar().isPresent()) {
1305                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1306                                 }
1307                             }
1308                         }
1309                     } catch (Exception e) {
1310                         e.printStackTrace();
1311                     } finally {
1312                         if (tmpFile != null) {
1313                             try {
1314                                 Files.delete(tmpFile.toPath());
1315                             } catch (IOException e) {
1316                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1317                             }
1318                         }
1319                     }
1320                 }
1321                 if (syncMessage.getVerified().isPresent()) {
1322                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1323                     account.getSignalProtocolStore().saveIdentity(verifiedMessage.getDestination().getNumber().get(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1324                 }
1325                 if (syncMessage.getConfiguration().isPresent()) {
1326                     // TODO
1327                 }
1328             }
1329         }
1330     }
1331
1332     private File getContactAvatarFile(String number) {
1333         return new File(avatarsPath, "contact-" + number);
1334     }
1335
1336     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException {
1337         IOUtils.createPrivateDirectories(avatarsPath);
1338         if (attachment.isPointer()) {
1339             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1340             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1341         } else {
1342             SignalServiceAttachmentStream stream = attachment.asStream();
1343             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
1344         }
1345     }
1346
1347     private File getGroupAvatarFile(byte[] groupId) {
1348         return new File(avatarsPath, "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1349     }
1350
1351     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException {
1352         IOUtils.createPrivateDirectories(avatarsPath);
1353         if (attachment.isPointer()) {
1354             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1355             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1356         } else {
1357             SignalServiceAttachmentStream stream = attachment.asStream();
1358             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
1359         }
1360     }
1361
1362     public File getAttachmentFile(long attachmentId) {
1363         return new File(attachmentsPath, attachmentId + "");
1364     }
1365
1366     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException {
1367         IOUtils.createPrivateDirectories(attachmentsPath);
1368         return retrieveAttachment(pointer, getAttachmentFile(pointer.getId()), true);
1369     }
1370
1371     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException {
1372         if (storePreview && pointer.getPreview().isPresent()) {
1373             File previewFile = new File(outputFile + ".preview");
1374             try (OutputStream output = new FileOutputStream(previewFile)) {
1375                 byte[] preview = pointer.getPreview().get();
1376                 output.write(preview, 0, preview.length);
1377             } catch (FileNotFoundException e) {
1378                 e.printStackTrace();
1379                 return null;
1380             }
1381         }
1382
1383         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1384
1385         File tmpFile = IOUtils.createTempFile();
1386         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE)) {
1387             try (OutputStream output = new FileOutputStream(outputFile)) {
1388                 byte[] buffer = new byte[4096];
1389                 int read;
1390
1391                 while ((read = input.read(buffer)) != -1) {
1392                     output.write(buffer, 0, read);
1393                 }
1394             } catch (FileNotFoundException e) {
1395                 e.printStackTrace();
1396                 return null;
1397             }
1398         } finally {
1399             try {
1400                 Files.delete(tmpFile.toPath());
1401             } catch (IOException e) {
1402                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1403             }
1404         }
1405         return outputFile;
1406     }
1407
1408     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException {
1409         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1410         return messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE);
1411     }
1412
1413     @Override
1414     public boolean isRemote() {
1415         return false;
1416     }
1417
1418     private void sendGroups() throws IOException, UntrustedIdentityException {
1419         File groupsFile = IOUtils.createTempFile();
1420
1421         try {
1422             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1423                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1424                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1425                     ThreadInfo info = account.getThreadStore().getThread(Base64.encodeBytes(record.groupId));
1426                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1427                             new ArrayList<>(record.getMembers()), createGroupAvatarAttachment(record.groupId),
1428                             record.active, Optional.fromNullable(info != null ? info.messageExpirationTime : null),
1429                             Optional.fromNullable(record.color), false));
1430                 }
1431             }
1432
1433             if (groupsFile.exists() && groupsFile.length() > 0) {
1434                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1435                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1436                             .withStream(groupsFileStream)
1437                             .withContentType("application/octet-stream")
1438                             .withLength(groupsFile.length())
1439                             .build();
1440
1441                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1442                 }
1443             }
1444         } finally {
1445             try {
1446                 Files.delete(groupsFile.toPath());
1447             } catch (IOException e) {
1448                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1449             }
1450         }
1451     }
1452
1453     public void sendContacts() throws IOException, UntrustedIdentityException {
1454         File contactsFile = IOUtils.createTempFile();
1455
1456         try {
1457             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1458                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1459                 for (ContactInfo record : account.getContactStore().getContacts()) {
1460                     VerifiedMessage verifiedMessage = null;
1461                     ThreadInfo info = account.getThreadStore().getThread(record.number);
1462                     if (getIdentities().containsKey(record.number)) {
1463                         JsonIdentityKeyStore.Identity currentIdentity = null;
1464                         for (JsonIdentityKeyStore.Identity id : getIdentities().get(record.number)) {
1465                             if (currentIdentity == null || id.getDateAdded().after(currentIdentity.getDateAdded())) {
1466                                 currentIdentity = id;
1467                             }
1468                         }
1469                         if (currentIdentity != null) {
1470                             verifiedMessage = new VerifiedMessage(record.getAddress(), currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1471                         }
1472                     }
1473
1474                     byte[] profileKey = record.profileKey == null ? null : Base64.decode(record.profileKey);
1475                     // TODO store list of blocked numbers
1476                     boolean blocked = false;
1477                     out.write(new DeviceContact(record.getAddress(), Optional.fromNullable(record.name),
1478                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1479                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), blocked, Optional.fromNullable(info != null ? info.messageExpirationTime : null)));
1480                 }
1481
1482                 if (account.getProfileKey() != null) {
1483                     // Send our own profile key as well
1484                     out.write(new DeviceContact(account.getSelfAddress(),
1485                             Optional.<String>absent(), Optional.<SignalServiceAttachmentStream>absent(),
1486                             Optional.<String>absent(), Optional.<VerifiedMessage>absent(),
1487                             Optional.of(account.getProfileKey()),
1488                             false, Optional.<Integer>absent()));
1489                 }
1490             }
1491
1492             if (contactsFile.exists() && contactsFile.length() > 0) {
1493                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1494                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1495                             .withStream(contactsFileStream)
1496                             .withContentType("application/octet-stream")
1497                             .withLength(contactsFile.length())
1498                             .build();
1499
1500                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1501                 }
1502             }
1503         } finally {
1504             try {
1505                 Files.delete(contactsFile.toPath());
1506             } catch (IOException e) {
1507                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1508             }
1509         }
1510     }
1511
1512     private void sendVerifiedMessage(SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1513         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1514         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1515     }
1516
1517     public List<ContactInfo> getContacts() {
1518         return account.getContactStore().getContacts();
1519     }
1520
1521     public ContactInfo getContact(String number) {
1522         return account.getContactStore().getContact(number);
1523     }
1524
1525     public GroupInfo getGroup(byte[] groupId) {
1526         return account.getGroupStore().getGroup(groupId);
1527     }
1528
1529     public Map<String, List<JsonIdentityKeyStore.Identity>> getIdentities() {
1530         return account.getSignalProtocolStore().getIdentities();
1531     }
1532
1533     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) {
1534         return account.getSignalProtocolStore().getIdentities(number);
1535     }
1536
1537     /**
1538      * Trust this the identity with this fingerprint
1539      *
1540      * @param name        username of the identity
1541      * @param fingerprint Fingerprint
1542      */
1543     public boolean trustIdentityVerified(String name, byte[] fingerprint) {
1544         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1545         if (ids == null) {
1546             return false;
1547         }
1548         for (JsonIdentityKeyStore.Identity id : ids) {
1549             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1550                 continue;
1551             }
1552
1553             account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1554             try {
1555                 sendVerifiedMessage(new SignalServiceAddress(null, name), id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1556             } catch (IOException | UntrustedIdentityException e) {
1557                 e.printStackTrace();
1558             }
1559             account.save();
1560             return true;
1561         }
1562         return false;
1563     }
1564
1565     /**
1566      * Trust this the identity with this safety number
1567      *
1568      * @param name         username of the identity
1569      * @param safetyNumber Safety number
1570      */
1571     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) {
1572         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1573         if (ids == null) {
1574             return false;
1575         }
1576         for (JsonIdentityKeyStore.Identity id : ids) {
1577             if (!safetyNumber.equals(computeSafetyNumber(name, id.getIdentityKey()))) {
1578                 continue;
1579             }
1580
1581             account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1582             try {
1583                 sendVerifiedMessage(new SignalServiceAddress(null, name), id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1584             } catch (IOException | UntrustedIdentityException e) {
1585                 e.printStackTrace();
1586             }
1587             account.save();
1588             return true;
1589         }
1590         return false;
1591     }
1592
1593     /**
1594      * Trust all keys of this identity without verification
1595      *
1596      * @param name username of the identity
1597      */
1598     public boolean trustIdentityAllKeys(String name) {
1599         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1600         if (ids == null) {
1601             return false;
1602         }
1603         for (JsonIdentityKeyStore.Identity id : ids) {
1604             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
1605                 account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1606                 try {
1607                     sendVerifiedMessage(new SignalServiceAddress(null, name), id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1608                 } catch (IOException | UntrustedIdentityException e) {
1609                     e.printStackTrace();
1610                 }
1611             }
1612         }
1613         account.save();
1614         return true;
1615     }
1616
1617     public String computeSafetyNumber(String theirUsername, IdentityKey theirIdentityKey) {
1618         return Utils.computeSafetyNumber(username, getIdentity(), theirUsername, theirIdentityKey);
1619     }
1620
1621     public interface ReceiveMessageHandler {
1622
1623         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
1624     }
1625 }