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.signal.libsignal.metadata.certificate.InvalidCertificateException;
  45 import org.signal.zkgroup.InvalidInputException;
  46 import org.signal.zkgroup.VerificationFailedException;
  47 import org.signal.zkgroup.profiles.ProfileKey;
  48 import org.whispersystems.libsignal.IdentityKey;
  49 import org.whispersystems.libsignal.IdentityKeyPair;
  50 import org.whispersystems.libsignal.InvalidKeyException;
  51 import org.whispersystems.libsignal.InvalidMessageException;
  52 import org.whispersystems.libsignal.InvalidVersionException;
  53 import org.whispersystems.libsignal.ecc.Curve;
  54 import org.whispersystems.libsignal.ecc.ECKeyPair;
  55 import org.whispersystems.libsignal.ecc.ECPublicKey;
  56 import org.whispersystems.libsignal.state.PreKeyRecord;
  57 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  58 import org.whispersystems.libsignal.util.KeyHelper;
  59 import org.whispersystems.libsignal.util.Medium;
  60 import org.whispersystems.libsignal.util.Pair;
  61 import org.whispersystems.libsignal.util.guava.Optional;
  62 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  63 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  64 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  65 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  66 import org.whispersystems.signalservice.api.crypto.InvalidCiphertextException;
  67 import org.whispersystems.signalservice.api.crypto.ProfileCipher;
  68 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  69 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccess;
  70 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  71 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  72 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  73 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  74 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  75 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
  76 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  77 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  78 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  79 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
  80 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
  81 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
  82 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
  83 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
  84 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
  85 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
  86 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
  87 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
  88 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
  89 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
  90 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
  91 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
  92 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
  93 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
  94 import org.whispersystems.signalservice.api.push.ContactTokenDetails;
  95 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  96 import org.whispersystems.signalservice.api.push.exceptions.AuthorizationFailedException;
  97 import org.whispersystems.signalservice.api.push.exceptions.EncapsulatedExceptions;
  98 import org.whispersystems.signalservice.api.push.exceptions.NetworkFailureException;
  99 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
 100 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 101 import org.whispersystems.signalservice.api.util.SleepTimer;
 102 import org.whispersystems.signalservice.api.util.StreamDetails;
 103 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 104 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 105 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 106 import org.whispersystems.util.Base64;
 107
 108 import java.io.File;
 109 import java.io.FileInputStream;
 110 import java.io.FileNotFoundException;
 111 import java.io.FileOutputStream;
 112 import java.io.IOException;
 113 import java.io.InputStream;
 114 import java.io.OutputStream;
 115 import java.net.URI;
 116 import java.nio.file.Files;
 117 import java.nio.file.Paths;
 118 import java.nio.file.StandardCopyOption;
 119 import java.util.ArrayList;
 120 import java.util.Arrays;
 121 import java.util.Collection;
 122 import java.util.Collections;
 123 import java.util.Date;
 124 import java.util.HashSet;
 125 import java.util.LinkedList;
 126 import java.util.List;
 127 import java.util.Locale;
 128 import java.util.Map;
 129 import java.util.Objects;
 130 import java.util.Set;
 131 import java.util.concurrent.TimeUnit;
 132 import java.util.concurrent.TimeoutException;
 133
 134 public class Manager implements Signal {
 135
 136     private static final SignalServiceProfile.Capabilities capabilities = new SignalServiceProfile.Capabilities(false, false);
 137
 138     private final String settingsPath;
 139     private final String dataPath;
 140     private final String attachmentsPath;
 141     private final String avatarsPath;
 142     private final SleepTimer timer = new UptimeSleepTimer();
 143
 144     private SignalAccount account;
 145     private String username;
 146     private SignalServiceAccountManager accountManager;
 147     private SignalServiceMessagePipe messagePipe = null;
 148     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 149
 150     public Manager(String username, String settingsPath) {
 151         this.username = username;
 152         this.settingsPath = settingsPath;
 153         this.dataPath = this.settingsPath + "/data";
 154         this.attachmentsPath = this.settingsPath + "/attachments";
 155         this.avatarsPath = this.settingsPath + "/avatars";
 156
 157     }
 158
 159     public String getUsername() {
 160         return username;
 161     }
 162
 163     private SignalServiceAddress getSelfAddress() {
 164         return new SignalServiceAddress(null, username);
 165     }
 166
 167     private SignalServiceAccountManager getSignalServiceAccountManager() {
 168         return new SignalServiceAccountManager(BaseConfig.serviceConfiguration, null, account.getUsername(), account.getPassword(), account.getDeviceId(), BaseConfig.USER_AGENT, timer);
 169     }
 170
 171     private IdentityKey getIdentity() {
 172         return account.getSignalProtocolStore().getIdentityKeyPair().getPublicKey();
 173     }
 174
 175     public int getDeviceId() {
 176         return account.getDeviceId();
 177     }
 178
 179     private String getMessageCachePath() {
 180         return this.dataPath + "/" + username + ".d/msg-cache";
 181     }
 182
 183     private String getMessageCachePath(String sender) {
 184         return getMessageCachePath() + "/" + sender.replace("/", "_");
 185     }
 186
 187     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 188         String cachePath = getMessageCachePath(sender);
 189         IOUtils.createPrivateDirectories(cachePath);
 190         return new File(cachePath + "/" + now + "_" + timestamp);
 191     }
 192
 193     public boolean userHasKeys() {
 194         return account != null && account.getSignalProtocolStore() != null;
 195     }
 196
 197     public void init() throws IOException {
 198         if (!SignalAccount.userExists(dataPath, username)) {
 199             return;
 200         }
 201         account = SignalAccount.load(dataPath, username);
 202
 203         migrateLegacyConfigs();
 204
 205         accountManager = getSignalServiceAccountManager();
 206         try {
 207             if (account.isRegistered() && accountManager.getPreKeysCount() < BaseConfig.PREKEY_MINIMUM_COUNT) {
 208                 refreshPreKeys();
 209                 account.save();
 210             }
 211         } catch (AuthorizationFailedException e) {
 212             System.err.println("Authorization failed, was the number registered elsewhere?");
 213             throw e;
 214         }
 215     }
 216
 217     private void migrateLegacyConfigs() {
 218         // Copy group avatars that were previously stored in the attachments folder
 219         // to the new avatar folder
 220         if (JsonGroupStore.groupsWithLegacyAvatarId.size() > 0) {
 221             for (GroupInfo g : JsonGroupStore.groupsWithLegacyAvatarId) {
 222                 File avatarFile = getGroupAvatarFile(g.groupId);
 223                 File attachmentFile = getAttachmentFile(g.getAvatarId());
 224                 if (!avatarFile.exists() && attachmentFile.exists()) {
 225                     try {
 226                         IOUtils.createPrivateDirectories(avatarsPath);
 227                         Files.copy(attachmentFile.toPath(), avatarFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 228                     } catch (Exception e) {
 229                         // Ignore
 230                     }
 231                 }
 232             }
 233             JsonGroupStore.groupsWithLegacyAvatarId.clear();
 234             account.save();
 235         }
 236         if (account.getProfileKey() == null) {
 237             // Old config file, creating new profile key
 238             account.setProfileKey(KeyUtils.createProfileKey());
 239             account.save();
 240         }
 241     }
 242
 243     private void createNewIdentity() throws IOException {
 244         IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 245         int registrationId = KeyHelper.generateRegistrationId(false);
 246         if (username == null) {
 247             account = SignalAccount.createTemporaryAccount(identityKey, registrationId);
 248         } else {
 249             ProfileKey profileKey = KeyUtils.createProfileKey();
 250             account = SignalAccount.create(dataPath, username, identityKey, registrationId, profileKey);
 251             account.save();
 252         }
 253     }
 254
 255     public boolean isRegistered() {
 256         return account != null && account.isRegistered();
 257     }
 258
 259     public void register(boolean voiceVerification) throws IOException {
 260         if (account == null) {
 261             createNewIdentity();
 262         }
 263         account.setPassword(KeyUtils.createPassword());
 264         accountManager = getSignalServiceAccountManager();
 265
 266         if (voiceVerification) {
 267             accountManager.requestVoiceVerificationCode(Locale.getDefault(), Optional.absent(), Optional.absent());
 268         } else {
 269             accountManager.requestSmsVerificationCode(false, Optional.absent(), Optional.absent());
 270         }
 271
 272         account.setRegistered(false);
 273         account.save();
 274     }
 275
 276     public void updateAccountAttributes() throws IOException {
 277         accountManager.setAccountAttributes(account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, account.getRegistrationLockPin(), account.getRegistrationLock(), getSelfUnidentifiedAccessKey(), false, capabilities);
 278     }
 279
 280     public void setProfileName(String name) throws IOException {
 281         accountManager.setProfileName(account.getProfileKey(), name);
 282     }
 283
 284     public void setProfileAvatar(File avatar) throws IOException {
 285         final StreamDetails streamDetails = Utils.createStreamDetailsFromFile(avatar);
 286         accountManager.setProfileAvatar(account.getProfileKey(), streamDetails);
 287         streamDetails.getStream().close();
 288     }
 289
 290     public void removeProfileAvatar() throws IOException {
 291         accountManager.setProfileAvatar(account.getProfileKey(), null);
 292     }
 293
 294     public void unregister() throws IOException {
 295         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 296         // If this is the master device, other users can't send messages to this number anymore.
 297         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 298         accountManager.setGcmId(Optional.absent());
 299
 300         account.setRegistered(false);
 301         account.save();
 302     }
 303
 304     public String getDeviceLinkUri() throws TimeoutException, IOException {
 305         if (account == null) {
 306             createNewIdentity();
 307         }
 308         account.setPassword(KeyUtils.createPassword());
 309         accountManager = getSignalServiceAccountManager();
 310         String uuid = accountManager.getNewDeviceUuid();
 311
 312         return Utils.createDeviceLinkUri(new Utils.DeviceLinkInfo(uuid, getIdentity().getPublicKey()));
 313     }
 314
 315     public void finishDeviceLink(String deviceName) throws IOException, InvalidKeyException, TimeoutException, UserAlreadyExists {
 316         account.setSignalingKey(KeyUtils.createSignalingKey());
 317         SignalServiceAccountManager.NewDeviceRegistrationReturn ret = accountManager.finishNewDeviceRegistration(account.getSignalProtocolStore().getIdentityKeyPair(), account.getSignalingKey(), false, true, account.getSignalProtocolStore().getLocalRegistrationId(), deviceName);
 318
 319         username = ret.getNumber();
 320         // TODO do this check before actually registering
 321         if (SignalAccount.userExists(dataPath, username)) {
 322             throw new UserAlreadyExists(username, SignalAccount.getFileName(dataPath, username));
 323         }
 324
 325         // Create new account with the synced identity
 326         byte[] profileKeyBytes = ret.getProfileKey();
 327         ProfileKey profileKey;
 328         if (profileKeyBytes == null) {
 329             profileKey = KeyUtils.createProfileKey();
 330         } else {
 331             try {
 332                 profileKey = new ProfileKey(profileKeyBytes);
 333             } catch (InvalidInputException e) {
 334                 throw new IOException("Received invalid profileKey", e);
 335             }
 336         }
 337         account = SignalAccount.createLinkedAccount(dataPath, username, account.getPassword(), ret.getDeviceId(), ret.getIdentity(), account.getSignalProtocolStore().getLocalRegistrationId(), account.getSignalingKey(), profileKey);
 338
 339         refreshPreKeys();
 340
 341         requestSyncGroups();
 342         requestSyncContacts();
 343         requestSyncBlocked();
 344         requestSyncConfiguration();
 345
 346         account.save();
 347     }
 348
 349     public List<DeviceInfo> getLinkedDevices() throws IOException {
 350         List<DeviceInfo> devices = accountManager.getDevices();
 351         account.setMultiDevice(devices.size() > 1);
 352         account.save();
 353         return devices;
 354     }
 355
 356     public void removeLinkedDevices(int deviceId) throws IOException {
 357         accountManager.removeDevice(deviceId);
 358         List<DeviceInfo> devices = accountManager.getDevices();
 359         account.setMultiDevice(devices.size() > 1);
 360         account.save();
 361     }
 362
 363     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 364         Utils.DeviceLinkInfo info = Utils.parseDeviceLinkUri(linkUri);
 365
 366         addDevice(info.deviceIdentifier, info.deviceKey);
 367     }
 368
 369     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 370         IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 371         String verificationCode = accountManager.getNewDeviceVerificationCode();
 372
 373         accountManager.addDevice(deviceIdentifier, deviceKey, identityKeyPair, Optional.of(account.getProfileKey().serialize()), verificationCode);
 374         account.setMultiDevice(true);
 375         account.save();
 376     }
 377
 378     private List<PreKeyRecord> generatePreKeys() {
 379         List<PreKeyRecord> records = new ArrayList<>(BaseConfig.PREKEY_BATCH_SIZE);
 380
 381         final int offset = account.getPreKeyIdOffset();
 382         for (int i = 0; i < BaseConfig.PREKEY_BATCH_SIZE; i++) {
 383             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 384             ECKeyPair keyPair = Curve.generateKeyPair();
 385             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 386
 387             records.add(record);
 388         }
 389
 390         account.addPreKeys(records);
 391         account.save();
 392
 393         return records;
 394     }
 395
 396     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 397         try {
 398             ECKeyPair keyPair = Curve.generateKeyPair();
 399             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 400             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(), System.currentTimeMillis(), keyPair, signature);
 401
 402             account.addSignedPreKey(record);
 403             account.save();
 404
 405             return record;
 406         } catch (InvalidKeyException e) {
 407             throw new AssertionError(e);
 408         }
 409     }
 410
 411     public void verifyAccount(String verificationCode, String pin) throws IOException {
 412         verificationCode = verificationCode.replace("-", "");
 413         account.setSignalingKey(KeyUtils.createSignalingKey());
 414         // TODO make unrestricted unidentified access configurable
 415         accountManager.verifyAccountWithCode(verificationCode, account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, pin, null, getSelfUnidentifiedAccessKey(), false, capabilities);
 416
 417         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 418         account.setRegistered(true);
 419         account.setRegistrationLockPin(pin);
 420
 421         refreshPreKeys();
 422         account.save();
 423     }
 424
 425     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 426         if (pin.isPresent()) {
 427             account.setRegistrationLockPin(pin.get());
 428             throw new RuntimeException("Not implemented anymore, will be replaced with KBS");
 429         } else {
 430             account.setRegistrationLockPin(null);
 431             accountManager.removeV1Pin();
 432         }
 433         account.save();
 434     }
 435
 436     private void refreshPreKeys() throws IOException {
 437         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 438         final IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 439         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 440
 441         accountManager.setPreKeys(getIdentity(), signedPreKeyRecord, oneTimePreKeys);
 442     }
 443
 444     private SignalServiceMessageReceiver getMessageReceiver() {
 445         return new SignalServiceMessageReceiver(BaseConfig.serviceConfiguration, null, username, account.getPassword(), account.getDeviceId(), account.getSignalingKey(), BaseConfig.USER_AGENT, null, timer);
 446     }
 447
 448     private SignalServiceMessageSender getMessageSender() {
 449         return new SignalServiceMessageSender(BaseConfig.serviceConfiguration, null, username, account.getPassword(),
 450                 account.getDeviceId(), account.getSignalProtocolStore(), BaseConfig.USER_AGENT, account.isMultiDevice(), Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.absent());
 451     }
 452
 453     private SignalServiceProfile getRecipientProfile(SignalServiceAddress address, Optional<UnidentifiedAccess> unidentifiedAccess) throws IOException {
 454         SignalServiceMessagePipe pipe = unidentifiedMessagePipe != null && unidentifiedAccess.isPresent() ? unidentifiedMessagePipe
 455                 : messagePipe;
 456
 457         if (pipe != null) {
 458             try {
 459                 return pipe.getProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).getProfile();
 460             } catch (IOException ignored) {
 461             }
 462         }
 463
 464         SignalServiceMessageReceiver receiver = getMessageReceiver();
 465         try {
 466             return receiver.retrieveProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).getProfile();
 467         } catch (VerificationFailedException e) {
 468             throw new AssertionError(e);
 469         }
 470     }
 471
 472     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 473         File file = getGroupAvatarFile(groupId);
 474         if (!file.exists()) {
 475             return Optional.absent();
 476         }
 477
 478         return Optional.of(Utils.createAttachment(file));
 479     }
 480
 481     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 482         File file = getContactAvatarFile(number);
 483         if (!file.exists()) {
 484             return Optional.absent();
 485         }
 486
 487         return Optional.of(Utils.createAttachment(file));
 488     }
 489
 490     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 491         GroupInfo g = account.getGroupStore().getGroup(groupId);
 492         if (g == null) {
 493             throw new GroupNotFoundException(groupId);
 494         }
 495         for (String member : g.members) {
 496             if (member.equals(this.username)) {
 497                 return g;
 498             }
 499         }
 500         throw new NotAGroupMemberException(groupId, g.name);
 501     }
 502
 503     public List<GroupInfo> getGroups() {
 504         return account.getGroupStore().getGroups();
 505     }
 506
 507     @Override
 508     public void sendGroupMessage(String messageText, List<String> attachments,
 509                                  byte[] groupId)
 510             throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 511         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 512         if (attachments != null) {
 513             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 514         }
 515         if (groupId != null) {
 516             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 517                     .withId(groupId)
 518                     .build();
 519             messageBuilder.asGroupMessage(group);
 520         }
 521         ThreadInfo thread = account.getThreadStore().getThread(Base64.encodeBytes(groupId));
 522         if (thread != null) {
 523             messageBuilder.withExpiration(thread.messageExpirationTime);
 524         }
 525
 526         final GroupInfo g = getGroupForSending(groupId);
 527
 528         // Don't send group message to ourself
 529         final List<String> membersSend = new ArrayList<>(g.members);
 530         membersSend.remove(this.username);
 531         sendMessageLegacy(messageBuilder, membersSend);
 532     }
 533
 534     public void sendGroupMessageReaction(String emoji, boolean remove, SignalServiceAddress targetAuthor,
 535                                          long targetSentTimestamp, byte[] groupId)
 536             throws IOException, EncapsulatedExceptions, AttachmentInvalidException {
 537         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, targetAuthor, targetSentTimestamp);
 538         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 539                 .withReaction(reaction)
 540                 .withProfileKey(account.getProfileKey().serialize());
 541         if (groupId != null) {
 542             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 543                     .withId(groupId)
 544                     .build();
 545             messageBuilder.asGroupMessage(group);
 546         }
 547         final GroupInfo g = getGroupForSending(groupId);
 548         // Don't send group message to ourself
 549         final List<String> membersSend = new ArrayList<>(g.members);
 550         membersSend.remove(this.username);
 551         sendMessageLegacy(messageBuilder, membersSend);
 552     }
 553
 554     public void sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, EncapsulatedExceptions {
 555         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 556                 .withId(groupId)
 557                 .build();
 558
 559         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 560                 .asGroupMessage(group);
 561
 562         final GroupInfo g = getGroupForSending(groupId);
 563         g.members.remove(this.username);
 564         account.getGroupStore().updateGroup(g);
 565
 566         sendMessageLegacy(messageBuilder, g.members);
 567     }
 568
 569     private byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<String> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 570         GroupInfo g;
 571         if (groupId == null) {
 572             // Create new group
 573             g = new GroupInfo(KeyUtils.createGroupId());
 574             g.members.add(username);
 575         } else {
 576             g = getGroupForSending(groupId);
 577         }
 578
 579         if (name != null) {
 580             g.name = name;
 581         }
 582
 583         if (members != null) {
 584             Set<String> newMembers = new HashSet<>();
 585             for (String member : members) {
 586                 try {
 587                     member = Utils.canonicalizeNumber(member, username);
 588                 } catch (InvalidNumberException e) {
 589                     System.err.println("Failed to add member \"" + member + "\" to group: " + e.getMessage());
 590                     System.err.println("Aborting…");
 591                     System.exit(1);
 592                 }
 593                 if (g.members.contains(member)) {
 594                     continue;
 595                 }
 596                 newMembers.add(member);
 597                 g.members.add(member);
 598             }
 599             final List<ContactTokenDetails> contacts = accountManager.getContacts(newMembers);
 600             if (contacts.size() != newMembers.size()) {
 601                 // Some of the new members are not registered on Signal
 602                 for (ContactTokenDetails contact : contacts) {
 603                     newMembers.remove(contact.getNumber());
 604                 }
 605                 System.err.println("Failed to add members " + Util.join(", ", newMembers) + " to group: Not registered on Signal");
 606                 System.err.println("Aborting…");
 607                 System.exit(1);
 608             }
 609         }
 610
 611         if (avatarFile != null) {
 612             IOUtils.createPrivateDirectories(avatarsPath);
 613             File aFile = getGroupAvatarFile(g.groupId);
 614             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 615         }
 616
 617         account.getGroupStore().updateGroup(g);
 618
 619         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 620
 621         // Don't send group message to ourself
 622         final List<String> membersSend = new ArrayList<>(g.members);
 623         membersSend.remove(this.username);
 624         sendMessageLegacy(messageBuilder, membersSend);
 625         return g.groupId;
 626     }
 627
 628     private void sendUpdateGroupMessage(byte[] groupId, String recipient) throws IOException, EncapsulatedExceptions {
 629         if (groupId == null) {
 630             return;
 631         }
 632         GroupInfo g = getGroupForSending(groupId);
 633
 634         if (!g.members.contains(recipient)) {
 635             return;
 636         }
 637
 638         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 639
 640         // Send group message only to the recipient who requested it
 641         final List<String> membersSend = new ArrayList<>();
 642         membersSend.add(recipient);
 643         sendMessageLegacy(messageBuilder, membersSend);
 644     }
 645
 646     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfo g) {
 647         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 648                 .withId(g.groupId)
 649                 .withName(g.name)
 650                 .withMembers(new ArrayList<>(g.getMembers()));
 651
 652         File aFile = getGroupAvatarFile(g.groupId);
 653         if (aFile.exists()) {
 654             try {
 655                 group.withAvatar(Utils.createAttachment(aFile));
 656             } catch (IOException e) {
 657                 throw new AttachmentInvalidException(aFile.toString(), e);
 658             }
 659         }
 660
 661         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 662                 .asGroupMessage(group.build());
 663
 664         ThreadInfo thread = account.getThreadStore().getThread(Base64.encodeBytes(g.groupId));
 665         if (thread != null) {
 666             messageBuilder.withExpiration(thread.messageExpirationTime);
 667         }
 668
 669         return messageBuilder;
 670     }
 671
 672     private void sendGroupInfoRequest(byte[] groupId, String recipient) throws IOException, EncapsulatedExceptions {
 673         if (groupId == null) {
 674             return;
 675         }
 676
 677         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 678                 .withId(groupId);
 679
 680         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 681                 .asGroupMessage(group.build());
 682
 683         ThreadInfo thread = account.getThreadStore().getThread(Base64.encodeBytes(groupId));
 684         if (thread != null) {
 685             messageBuilder.withExpiration(thread.messageExpirationTime);
 686         }
 687
 688         // Send group info request message to the recipient who sent us a message with this groupId
 689         final List<String> membersSend = new ArrayList<>();
 690         membersSend.add(recipient);
 691         sendMessageLegacy(messageBuilder, membersSend);
 692     }
 693
 694     @Override
 695     public void sendMessage(String message, List<String> attachments, String recipient)
 696             throws EncapsulatedExceptions, AttachmentInvalidException, IOException {
 697         List<String> recipients = new ArrayList<>(1);
 698         recipients.add(recipient);
 699         sendMessage(message, attachments, recipients);
 700     }
 701
 702     @Override
 703     public void sendMessage(String messageText, List<String> attachments,
 704                             List<String> recipients)
 705             throws IOException, EncapsulatedExceptions, AttachmentInvalidException {
 706         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 707         if (attachments != null) {
 708             List<SignalServiceAttachment> attachmentStreams = Utils.getSignalServiceAttachments(attachments);
 709
 710             // Upload attachments here, so we only upload once even for multiple recipients
 711             SignalServiceMessageSender messageSender = getMessageSender();
 712             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
 713             for (SignalServiceAttachment attachment : attachmentStreams) {
 714                 if (attachment.isStream()) {
 715                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
 716                 } else if (attachment.isPointer()) {
 717                     attachmentPointers.add(attachment.asPointer());
 718                 }
 719             }
 720
 721             messageBuilder.withAttachments(attachmentPointers);
 722         }
 723         messageBuilder.withProfileKey(account.getProfileKey().serialize());
 724         sendMessageLegacy(messageBuilder, recipients);
 725     }
 726
 727     public void sendMessageReaction(String emoji, boolean remove, SignalServiceAddress targetAuthor,
 728                                     long targetSentTimestamp, List<String> recipients)
 729             throws IOException, EncapsulatedExceptions, AttachmentInvalidException {
 730         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, targetAuthor, targetSentTimestamp);
 731         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 732                 .withReaction(reaction)
 733                 .withProfileKey(account.getProfileKey().serialize());
 734         sendMessageLegacy(messageBuilder, recipients);
 735     }
 736
 737     @Override
 738     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions {
 739         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 740                 .asEndSessionMessage();
 741
 742         sendMessageLegacy(messageBuilder, recipients);
 743     }
 744
 745     @Override
 746     public String getContactName(String number) throws InvalidNumberException {
 747         String canonicalizedNumber = Utils.canonicalizeNumber(number, username);
 748         ContactInfo contact = account.getContactStore().getContact(canonicalizedNumber);
 749         if (contact == null) {
 750             return "";
 751         } else {
 752             return contact.name;
 753         }
 754     }
 755
 756     @Override
 757     public void setContactName(String number, String name) throws InvalidNumberException {
 758         String canonicalizedNumber = Utils.canonicalizeNumber(number, username);
 759         ContactInfo contact = account.getContactStore().getContact(canonicalizedNumber);
 760         if (contact == null) {
 761             contact = new ContactInfo();
 762             contact.number = canonicalizedNumber;
 763             System.err.println("Add contact " + canonicalizedNumber + " named " + name);
 764         } else {
 765             System.err.println("Updating contact " + canonicalizedNumber + " name " + contact.name + " -> " + name);
 766         }
 767         contact.name = name;
 768         account.getContactStore().updateContact(contact);
 769         account.save();
 770     }
 771
 772     @Override
 773     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
 774         number = Utils.canonicalizeNumber(number, username);
 775         ContactInfo contact = account.getContactStore().getContact(number);
 776         if (contact == null) {
 777             contact = new ContactInfo();
 778             contact.number = number;
 779             System.err.println("Adding and " + (blocked ? "blocking" : "unblocking") + " contact " + number);
 780         } else {
 781             System.err.println((blocked ? "Blocking" : "Unblocking") + " contact " + number);
 782         }
 783         contact.blocked = blocked;
 784         account.getContactStore().updateContact(contact);
 785         account.save();
 786     }
 787
 788     @Override
 789     public void setGroupBlocked(final byte[] groupId, final boolean blocked) throws GroupNotFoundException {
 790         GroupInfo group = getGroup(groupId);
 791         if (group == null) {
 792             throw new GroupNotFoundException(groupId);
 793         } else {
 794             System.err.println((blocked ? "Blocking" : "Unblocking") + " group " + Base64.encodeBytes(groupId));
 795             group.blocked = blocked;
 796             account.getGroupStore().updateGroup(group);
 797             account.save();
 798         }
 799     }
 800
 801     @Override
 802     public List<byte[]> getGroupIds() {
 803         List<GroupInfo> groups = getGroups();
 804         List<byte[]> ids = new ArrayList<>(groups.size());
 805         for (GroupInfo group : groups) {
 806             ids.add(group.groupId);
 807         }
 808         return ids;
 809     }
 810
 811     @Override
 812     public String getGroupName(byte[] groupId) {
 813         GroupInfo group = getGroup(groupId);
 814         if (group == null) {
 815             return "";
 816         } else {
 817             return group.name;
 818         }
 819     }
 820
 821     @Override
 822     public List<String> getGroupMembers(byte[] groupId) {
 823         GroupInfo group = getGroup(groupId);
 824         if (group == null) {
 825             return new ArrayList<>();
 826         } else {
 827             return new ArrayList<>(group.members);
 828         }
 829     }
 830
 831     @Override
 832     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 833         if (groupId.length == 0) {
 834             groupId = null;
 835         }
 836         if (name.isEmpty()) {
 837             name = null;
 838         }
 839         if (members.size() == 0) {
 840             members = null;
 841         }
 842         if (avatar.isEmpty()) {
 843             avatar = null;
 844         }
 845         return sendUpdateGroupMessage(groupId, name, members, avatar);
 846     }
 847
 848     /**
 849      * Change the expiration timer for a thread (number of groupId)
 850      *
 851      * @param numberOrGroupId
 852      * @param messageExpirationTimer
 853      */
 854     public void setExpirationTimer(String numberOrGroupId, int messageExpirationTimer) {
 855         ThreadInfo thread = account.getThreadStore().getThread(numberOrGroupId);
 856         thread.messageExpirationTime = messageExpirationTimer;
 857         account.getThreadStore().updateThread(thread);
 858     }
 859
 860     private void requestSyncGroups() throws IOException {
 861         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 862         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 863         try {
 864             sendSyncMessage(message);
 865         } catch (UntrustedIdentityException e) {
 866             e.printStackTrace();
 867         }
 868     }
 869
 870     private void requestSyncContacts() throws IOException {
 871         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 872         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 873         try {
 874             sendSyncMessage(message);
 875         } catch (UntrustedIdentityException e) {
 876             e.printStackTrace();
 877         }
 878     }
 879
 880     private void requestSyncBlocked() throws IOException {
 881         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
 882         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 883         try {
 884             sendSyncMessage(message);
 885         } catch (UntrustedIdentityException e) {
 886             e.printStackTrace();
 887         }
 888     }
 889
 890     private void requestSyncConfiguration() throws IOException {
 891         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
 892         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 893         try {
 894             sendSyncMessage(message);
 895         } catch (UntrustedIdentityException e) {
 896             e.printStackTrace();
 897         }
 898     }
 899
 900     private byte[] getSenderCertificate() throws IOException {
 901         byte[] certificate = accountManager.getSenderCertificate();
 902         // TODO cache for a day
 903         return certificate;
 904     }
 905
 906     private byte[] getSelfUnidentifiedAccessKey() {
 907         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
 908     }
 909
 910     private static SignalProfile decryptProfile(SignalServiceProfile encryptedProfile, ProfileKey profileKey) throws IOException {
 911         ProfileCipher profileCipher = new ProfileCipher(profileKey);
 912         try {
 913             return new SignalProfile(
 914                     encryptedProfile.getIdentityKey(),
 915                     encryptedProfile.getName() == null ? null : new String(profileCipher.decryptName(Base64.decode(encryptedProfile.getName()))),
 916                     encryptedProfile.getAvatar(),
 917                     encryptedProfile.getUnidentifiedAccess() == null || !profileCipher.verifyUnidentifiedAccess(Base64.decode(encryptedProfile.getUnidentifiedAccess())) ? null : encryptedProfile.getUnidentifiedAccess(),
 918                     encryptedProfile.isUnrestrictedUnidentifiedAccess()
 919             );
 920         } catch (InvalidCiphertextException e) {
 921             return null;
 922         }
 923     }
 924
 925     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) throws IOException {
 926         ContactInfo contact = account.getContactStore().getContact(recipient.getNumber().get());
 927         if (contact == null || contact.profileKey == null) {
 928             return null;
 929         }
 930         ProfileKey theirProfileKey;
 931         try {
 932             theirProfileKey = new ProfileKey(Base64.decode(contact.profileKey));
 933         } catch (InvalidInputException e) {
 934             throw new AssertionError(e);
 935         }
 936         SignalProfile targetProfile = decryptProfile(getRecipientProfile(recipient, Optional.absent()), theirProfileKey);
 937
 938         if (targetProfile == null || targetProfile.getUnidentifiedAccess() == null) {
 939             return null;
 940         }
 941
 942         if (targetProfile.isUnrestrictedUnidentifiedAccess()) {
 943             return KeyUtils.createUnrestrictedUnidentifiedAccess();
 944         }
 945
 946         return UnidentifiedAccess.deriveAccessKeyFrom(theirProfileKey);
 947     }
 948
 949     private Optional<UnidentifiedAccessPair> getAccessForSync() throws IOException {
 950         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
 951         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
 952
 953         if (selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
 954             return Optional.absent();
 955         }
 956
 957         try {
 958             return Optional.of(new UnidentifiedAccessPair(
 959                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
 960                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
 961             ));
 962         } catch (InvalidCertificateException e) {
 963             return Optional.absent();
 964         }
 965     }
 966
 967     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) throws IOException {
 968         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
 969         for (SignalServiceAddress recipient : recipients) {
 970             result.add(getAccessFor(recipient));
 971         }
 972         return result;
 973     }
 974
 975     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) throws IOException {
 976         byte[] recipientUnidentifiedAccessKey = getTargetUnidentifiedAccessKey(recipient);
 977         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
 978         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
 979
 980         if (recipientUnidentifiedAccessKey == null || selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
 981             return Optional.absent();
 982         }
 983
 984         try {
 985             return Optional.of(new UnidentifiedAccessPair(
 986                     new UnidentifiedAccess(recipientUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
 987                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
 988             ));
 989         } catch (InvalidCertificateException e) {
 990             return Optional.absent();
 991         }
 992     }
 993
 994     private void sendSyncMessage(SignalServiceSyncMessage message)
 995             throws IOException, UntrustedIdentityException {
 996         SignalServiceMessageSender messageSender = getMessageSender();
 997         try {
 998             messageSender.sendMessage(message, getAccessForSync());
 999         } catch (UntrustedIdentityException e) {
1000             account.getSignalProtocolStore().saveIdentity(e.getIdentifier(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1001             throw e;
1002         }
1003     }
1004
1005     /**
1006      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
1007      */
1008     private void sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<String> recipients)
1009             throws EncapsulatedExceptions, IOException {
1010         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
1011
1012         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
1013         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
1014         List<NetworkFailureException> networkExceptions = new LinkedList<>();
1015
1016         for (SendMessageResult result : results) {
1017             if (result.isUnregisteredFailure()) {
1018                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getNumber().get(), null));
1019             } else if (result.isNetworkFailure()) {
1020                 networkExceptions.add(new NetworkFailureException(result.getAddress().getNumber().get(), null));
1021             } else if (result.getIdentityFailure() != null) {
1022                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getNumber().get(), result.getIdentityFailure().getIdentityKey()));
1023             }
1024         }
1025         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
1026             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
1027         }
1028     }
1029
1030     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<String> recipients)
1031             throws IOException {
1032         Set<SignalServiceAddress> recipientsTS = Utils.getSignalServiceAddresses(recipients, username);
1033         if (recipientsTS == null) {
1034             account.save();
1035             return Collections.emptyList();
1036         }
1037
1038         if (messagePipe == null) {
1039             messagePipe = getMessageReceiver().createMessagePipe();
1040         }
1041         if (unidentifiedMessagePipe == null) {
1042             unidentifiedMessagePipe = getMessageReceiver().createUnidentifiedMessagePipe();
1043         }
1044         SignalServiceDataMessage message = null;
1045         try {
1046             SignalServiceMessageSender messageSender = getMessageSender();
1047
1048             message = messageBuilder.build();
1049             if (message.getGroupInfo().isPresent()) {
1050                 try {
1051                     final boolean isRecipientUpdate = false;
1052                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipientsTS), getAccessFor(recipientsTS), isRecipientUpdate, message);
1053                     for (SendMessageResult r : result) {
1054                         if (r.getIdentityFailure() != null) {
1055                             account.getSignalProtocolStore().saveIdentity(r.getAddress().getNumber().get(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
1056                         }
1057                     }
1058                     return result;
1059                 } catch (UntrustedIdentityException e) {
1060                     account.getSignalProtocolStore().saveIdentity(e.getIdentifier(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1061                     return Collections.emptyList();
1062                 }
1063             } else if (recipientsTS.size() == 1 && recipientsTS.contains(getSelfAddress())) {
1064                 SignalServiceAddress recipient = getSelfAddress();
1065                 final Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1066                 SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1067                         message.getTimestamp(),
1068                         message,
1069                         message.getExpiresInSeconds(),
1070                         Collections.singletonMap(recipient, unidentifiedAccess.isPresent()),
1071                         false);
1072                 SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1073
1074                 List<SendMessageResult> results = new ArrayList<>(recipientsTS.size());
1075                 try {
1076                     messageSender.sendMessage(syncMessage, unidentifiedAccess);
1077                 } catch (UntrustedIdentityException e) {
1078                     account.getSignalProtocolStore().saveIdentity(e.getIdentifier(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1079                     results.add(SendMessageResult.identityFailure(recipient, e.getIdentityKey()));
1080                 }
1081                 return results;
1082             } else {
1083                 // Send to all individually, so sync messages are sent correctly
1084                 List<SendMessageResult> results = new ArrayList<>(recipientsTS.size());
1085                 for (SignalServiceAddress address : recipientsTS) {
1086                     ThreadInfo thread = account.getThreadStore().getThread(address.getNumber().get());
1087                     if (thread != null) {
1088                         messageBuilder.withExpiration(thread.messageExpirationTime);
1089                     } else {
1090                         messageBuilder.withExpiration(0);
1091                     }
1092                     message = messageBuilder.build();
1093                     try {
1094                         SendMessageResult result = messageSender.sendMessage(address, getAccessFor(address), message);
1095                         results.add(result);
1096                     } catch (UntrustedIdentityException e) {
1097                         account.getSignalProtocolStore().saveIdentity(e.getIdentifier(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1098                         results.add(SendMessageResult.identityFailure(address, e.getIdentityKey()));
1099                     }
1100                 }
1101                 return results;
1102             }
1103         } finally {
1104             if (message != null && message.isEndSession()) {
1105                 for (SignalServiceAddress recipient : recipientsTS) {
1106                     handleEndSession(recipient.getNumber().get());
1107                 }
1108             }
1109             account.save();
1110         }
1111     }
1112
1113     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, ProtocolUntrustedIdentityException, SelfSendException, UnsupportedDataMessageException {
1114         SignalServiceCipher cipher = new SignalServiceCipher(getSelfAddress(), account.getSignalProtocolStore(), Utils.getCertificateValidator());
1115         try {
1116             return cipher.decrypt(envelope);
1117         } catch (ProtocolUntrustedIdentityException e) {
1118             // TODO We don't get the new untrusted identity from ProtocolUntrustedIdentityException anymore ... we need to get it from somewhere else
1119 //            account.getSignalProtocolStore().saveIdentity(e.getSender(), e.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
1120             throw e;
1121         }
1122     }
1123
1124     private void handleEndSession(String source) {
1125         account.getSignalProtocolStore().deleteAllSessions(source);
1126     }
1127
1128     private void handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, String source, SignalServiceAddress destination, boolean ignoreAttachments) {
1129         String threadId;
1130         if (message.getGroupInfo().isPresent()) {
1131             SignalServiceGroup groupInfo = message.getGroupInfo().get();
1132             threadId = Base64.encodeBytes(groupInfo.getGroupId());
1133             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1134             switch (groupInfo.getType()) {
1135                 case UPDATE:
1136                     if (group == null) {
1137                         group = new GroupInfo(groupInfo.getGroupId());
1138                     }
1139
1140                     if (groupInfo.getAvatar().isPresent()) {
1141                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1142                         if (avatar.isPointer()) {
1143                             try {
1144                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
1145                             } catch (IOException | InvalidMessageException e) {
1146                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getId() + "): " + e.getMessage());
1147                             }
1148                         }
1149                     }
1150
1151                     if (groupInfo.getName().isPresent()) {
1152                         group.name = groupInfo.getName().get();
1153                     }
1154
1155                     if (groupInfo.getMembers().isPresent()) {
1156                         group.addMembers(groupInfo.getMembers().get());
1157                     }
1158
1159                     account.getGroupStore().updateGroup(group);
1160                     break;
1161                 case DELIVER:
1162                     if (group == null) {
1163                         try {
1164                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
1165                         } catch (IOException | EncapsulatedExceptions e) {
1166                             e.printStackTrace();
1167                         }
1168                     }
1169                     break;
1170                 case QUIT:
1171                     if (group == null) {
1172                         try {
1173                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
1174                         } catch (IOException | EncapsulatedExceptions e) {
1175                             e.printStackTrace();
1176                         }
1177                     } else {
1178                         group.members.remove(source);
1179                         account.getGroupStore().updateGroup(group);
1180                     }
1181                     break;
1182                 case REQUEST_INFO:
1183                     if (group != null) {
1184                         try {
1185                             sendUpdateGroupMessage(groupInfo.getGroupId(), source);
1186                         } catch (IOException | EncapsulatedExceptions e) {
1187                             e.printStackTrace();
1188                         } catch (NotAGroupMemberException e) {
1189                             // We have left this group, so don't send a group update message
1190                         }
1191                     }
1192                     break;
1193             }
1194         } else {
1195             if (isSync) {
1196                 threadId = destination.getNumber().get();
1197             } else {
1198                 threadId = source;
1199             }
1200         }
1201         if (message.isEndSession()) {
1202             handleEndSession(isSync ? destination.getNumber().get() : source);
1203         }
1204         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1205             ThreadInfo thread = account.getThreadStore().getThread(threadId);
1206             if (thread == null) {
1207                 thread = new ThreadInfo();
1208                 thread.id = threadId;
1209             }
1210             if (thread.messageExpirationTime != message.getExpiresInSeconds()) {
1211                 thread.messageExpirationTime = message.getExpiresInSeconds();
1212                 account.getThreadStore().updateThread(thread);
1213             }
1214         }
1215         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1216             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1217                 if (attachment.isPointer()) {
1218                     try {
1219                         retrieveAttachment(attachment.asPointer());
1220                     } catch (IOException | InvalidMessageException e) {
1221                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getId() + "): " + e.getMessage());
1222                     }
1223                 }
1224             }
1225         }
1226         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1227             if (source.equals(username)) {
1228                 try {
1229                     this.account.setProfileKey(new ProfileKey(message.getProfileKey().get()));
1230                 } catch (InvalidInputException ignored) {
1231                 }
1232             }
1233             ContactInfo contact = account.getContactStore().getContact(source);
1234             if (contact == null) {
1235                 contact = new ContactInfo();
1236                 contact.number = source;
1237             }
1238             contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1239             account.getContactStore().updateContact(contact);
1240         }
1241         if (message.getPreviews().isPresent()) {
1242             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1243             for (SignalServiceDataMessage.Preview preview : previews) {
1244                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1245                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1246                     try {
1247                         retrieveAttachment(attachment);
1248                     } catch (IOException | InvalidMessageException e) {
1249                         System.err.println("Failed to retrieve attachment (" + attachment.getId() + "): " + e.getMessage());
1250                     }
1251                 }
1252             }
1253         }
1254     }
1255
1256     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1257         final File cachePath = new File(getMessageCachePath());
1258         if (!cachePath.exists()) {
1259             return;
1260         }
1261         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1262             if (!dir.isDirectory()) {
1263                 continue;
1264             }
1265
1266             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1267                 if (!fileEntry.isFile()) {
1268                     continue;
1269                 }
1270                 SignalServiceEnvelope envelope;
1271                 try {
1272                     envelope = Utils.loadEnvelope(fileEntry);
1273                     if (envelope == null) {
1274                         continue;
1275                     }
1276                 } catch (IOException e) {
1277                     e.printStackTrace();
1278                     continue;
1279                 }
1280                 SignalServiceContent content = null;
1281                 if (!envelope.isReceipt()) {
1282                     try {
1283                         content = decryptMessage(envelope);
1284                     } catch (Exception e) {
1285                         continue;
1286                     }
1287                     handleMessage(envelope, content, ignoreAttachments);
1288                 }
1289                 account.save();
1290                 handler.handleMessage(envelope, content, null);
1291                 try {
1292                     Files.delete(fileEntry.toPath());
1293                 } catch (IOException e) {
1294                     System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1295                 }
1296             }
1297             // Try to delete directory if empty
1298             dir.delete();
1299         }
1300     }
1301
1302     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
1303         retryFailedReceivedMessages(handler, ignoreAttachments);
1304         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1305
1306         try {
1307             if (messagePipe == null) {
1308                 messagePipe = messageReceiver.createMessagePipe();
1309             }
1310
1311             while (true) {
1312                 SignalServiceEnvelope envelope;
1313                 SignalServiceContent content = null;
1314                 Exception exception = null;
1315                 final long now = new Date().getTime();
1316                 try {
1317                     envelope = messagePipe.read(timeout, unit, envelope1 -> {
1318                         // store message on disk, before acknowledging receipt to the server
1319                         try {
1320                             File cacheFile = getMessageCacheFile(envelope1.getSourceE164().get(), now, envelope1.getTimestamp());
1321                             Utils.storeEnvelope(envelope1, cacheFile);
1322                         } catch (IOException e) {
1323                             System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
1324                         }
1325                     });
1326                 } catch (TimeoutException e) {
1327                     if (returnOnTimeout)
1328                         return;
1329                     continue;
1330                 } catch (InvalidVersionException e) {
1331                     System.err.println("Ignoring error: " + e.getMessage());
1332                     continue;
1333                 }
1334                 if (!envelope.isReceipt()) {
1335                     try {
1336                         content = decryptMessage(envelope);
1337                     } catch (Exception e) {
1338                         exception = e;
1339                     }
1340                     handleMessage(envelope, content, ignoreAttachments);
1341                 }
1342                 account.save();
1343                 if (!isMessageBlocked(envelope, content)) {
1344                     handler.handleMessage(envelope, content, exception);
1345                 }
1346                 if (!(exception instanceof ProtocolUntrustedIdentityException)) {
1347                     File cacheFile = null;
1348                     try {
1349                         cacheFile = getMessageCacheFile(envelope.getSourceE164().get(), now, envelope.getTimestamp());
1350                         Files.delete(cacheFile.toPath());
1351                         // Try to delete directory if empty
1352                         new File(getMessageCachePath()).delete();
1353                     } catch (IOException e) {
1354                         System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1355                     }
1356                 }
1357             }
1358         } finally {
1359             if (messagePipe != null) {
1360                 messagePipe.shutdown();
1361                 messagePipe = null;
1362             }
1363         }
1364     }
1365
1366     private boolean isMessageBlocked(SignalServiceEnvelope envelope, SignalServiceContent content) {
1367         SignalServiceAddress source;
1368         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1369             source = envelope.getSourceAddress();
1370         } else if (content != null) {
1371             source = content.getSender();
1372         } else {
1373             return false;
1374         }
1375         ContactInfo sourceContact = getContact(source.getNumber().get());
1376         if (sourceContact != null && sourceContact.blocked) {
1377             return true;
1378         }
1379
1380         if (content != null && content.getDataMessage().isPresent()) {
1381             SignalServiceDataMessage message = content.getDataMessage().get();
1382             if (message.getGroupInfo().isPresent()) {
1383                 SignalServiceGroup groupInfo = message.getGroupInfo().get();
1384                 GroupInfo group = getGroup(groupInfo.getGroupId());
1385                 if (groupInfo.getType() == SignalServiceGroup.Type.DELIVER && group != null && group.blocked) {
1386                     return true;
1387                 }
1388             }
1389         }
1390         return false;
1391     }
1392
1393     private void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1394         if (content != null) {
1395             SignalServiceAddress sender;
1396             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1397                 sender = envelope.getSourceAddress();
1398             } else {
1399                 sender = content.getSender();
1400             }
1401             if (content.getDataMessage().isPresent()) {
1402                 SignalServiceDataMessage message = content.getDataMessage().get();
1403                 handleSignalServiceDataMessage(message, false, sender.getNumber().get(), getSelfAddress(), ignoreAttachments);
1404             }
1405             if (content.getSyncMessage().isPresent()) {
1406                 account.setMultiDevice(true);
1407                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1408                 if (syncMessage.getSent().isPresent()) {
1409                     SentTranscriptMessage message = syncMessage.getSent().get();
1410                     handleSignalServiceDataMessage(message.getMessage(), true, sender.getNumber().get(), message.getDestination().orNull(), ignoreAttachments);
1411                 }
1412                 if (syncMessage.getRequest().isPresent()) {
1413                     RequestMessage rm = syncMessage.getRequest().get();
1414                     if (rm.isContactsRequest()) {
1415                         try {
1416                             sendContacts();
1417                         } catch (UntrustedIdentityException | IOException e) {
1418                             e.printStackTrace();
1419                         }
1420                     }
1421                     if (rm.isGroupsRequest()) {
1422                         try {
1423                             sendGroups();
1424                         } catch (UntrustedIdentityException | IOException e) {
1425                             e.printStackTrace();
1426                         }
1427                     }
1428                     if (rm.isBlockedListRequest()) {
1429                         try {
1430                             sendBlockedList();
1431                         } catch (UntrustedIdentityException | IOException e) {
1432                             e.printStackTrace();
1433                         }
1434                     }
1435                     // TODO Handle rm.isConfigurationRequest();
1436                 }
1437                 if (syncMessage.getGroups().isPresent()) {
1438                     File tmpFile = null;
1439                     try {
1440                         tmpFile = IOUtils.createTempFile();
1441                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1442                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1443                             DeviceGroup g;
1444                             while ((g = s.read()) != null) {
1445                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1446                                 if (syncGroup == null) {
1447                                     syncGroup = new GroupInfo(g.getId());
1448                                 }
1449                                 if (g.getName().isPresent()) {
1450                                     syncGroup.name = g.getName().get();
1451                                 }
1452                                 syncGroup.addMembers(g.getMembers());
1453                                 syncGroup.active = g.isActive();
1454                                 syncGroup.blocked = g.isBlocked();
1455                                 if (g.getColor().isPresent()) {
1456                                     syncGroup.color = g.getColor().get();
1457                                 }
1458
1459                                 if (g.getAvatar().isPresent()) {
1460                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1461                                 }
1462                                 syncGroup.inboxPosition = g.getInboxPosition().orNull();
1463                                 syncGroup.archived = g.isArchived();
1464                                 account.getGroupStore().updateGroup(syncGroup);
1465                             }
1466                         }
1467                     } catch (Exception e) {
1468                         e.printStackTrace();
1469                     } finally {
1470                         if (tmpFile != null) {
1471                             try {
1472                                 Files.delete(tmpFile.toPath());
1473                             } catch (IOException e) {
1474                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1475                             }
1476                         }
1477                     }
1478                 }
1479                 if (syncMessage.getBlockedList().isPresent()) {
1480                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
1481                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
1482                         if (address.getNumber().isPresent()) {
1483                             try {
1484                                 setContactBlocked(address.getNumber().get(), true);
1485                             } catch (InvalidNumberException e) {
1486                                 e.printStackTrace();
1487                             }
1488                         }
1489                     }
1490                     for (byte[] groupId : blockedListMessage.getGroupIds()) {
1491                         try {
1492                             setGroupBlocked(groupId, true);
1493                         } catch (GroupNotFoundException e) {
1494                             System.err.println("BlockedListMessage contained groupID that was not found in GroupStore: " + Base64.encodeBytes(groupId));
1495                         }
1496                     }
1497                 }
1498                 if (syncMessage.getContacts().isPresent()) {
1499                     File tmpFile = null;
1500                     try {
1501                         tmpFile = IOUtils.createTempFile();
1502                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1503                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1504                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1505                             if (contactsMessage.isComplete()) {
1506                                 account.getContactStore().clear();
1507                             }
1508                             DeviceContact c;
1509                             while ((c = s.read()) != null) {
1510                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1511                                     account.setProfileKey(c.getProfileKey().get());
1512                                 }
1513                                 ContactInfo contact = account.getContactStore().getContact(c.getAddress().getNumber().get());
1514                                 if (contact == null) {
1515                                     contact = new ContactInfo();
1516                                     contact.number = c.getAddress().getNumber().get();
1517                                 }
1518                                 if (c.getName().isPresent()) {
1519                                     contact.name = c.getName().get();
1520                                 }
1521                                 if (c.getColor().isPresent()) {
1522                                     contact.color = c.getColor().get();
1523                                 }
1524                                 if (c.getProfileKey().isPresent()) {
1525                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get().serialize());
1526                                 }
1527                                 if (c.getVerified().isPresent()) {
1528                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1529                                     account.getSignalProtocolStore().saveIdentity(verifiedMessage.getDestination().getNumber().get(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1530                                 }
1531                                 if (c.getExpirationTimer().isPresent()) {
1532                                     ThreadInfo thread = account.getThreadStore().getThread(c.getAddress().getNumber().get());
1533                                     if (thread == null) {
1534                                         thread = new ThreadInfo();
1535                                         thread.id = c.getAddress().getNumber().get();
1536                                     }
1537                                     thread.messageExpirationTime = c.getExpirationTimer().get();
1538                                     account.getThreadStore().updateThread(thread);
1539                                 }
1540                                 contact.blocked = c.isBlocked();
1541                                 contact.inboxPosition = c.getInboxPosition().orNull();
1542                                 contact.archived = c.isArchived();
1543                                 account.getContactStore().updateContact(contact);
1544
1545                                 if (c.getAvatar().isPresent()) {
1546                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1547                                 }
1548                             }
1549                         }
1550                     } catch (Exception e) {
1551                         e.printStackTrace();
1552                     } finally {
1553                         if (tmpFile != null) {
1554                             try {
1555                                 Files.delete(tmpFile.toPath());
1556                             } catch (IOException e) {
1557                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1558                             }
1559                         }
1560                     }
1561                 }
1562                 if (syncMessage.getVerified().isPresent()) {
1563                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1564                     account.getSignalProtocolStore().saveIdentity(verifiedMessage.getDestination().getNumber().get(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1565                 }
1566                 if (syncMessage.getConfiguration().isPresent()) {
1567                     // TODO
1568                 }
1569             }
1570         }
1571     }
1572
1573     private File getContactAvatarFile(String number) {
1574         return new File(avatarsPath, "contact-" + number);
1575     }
1576
1577     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException {
1578         IOUtils.createPrivateDirectories(avatarsPath);
1579         if (attachment.isPointer()) {
1580             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1581             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1582         } else {
1583             SignalServiceAttachmentStream stream = attachment.asStream();
1584             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
1585         }
1586     }
1587
1588     private File getGroupAvatarFile(byte[] groupId) {
1589         return new File(avatarsPath, "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1590     }
1591
1592     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException {
1593         IOUtils.createPrivateDirectories(avatarsPath);
1594         if (attachment.isPointer()) {
1595             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1596             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1597         } else {
1598             SignalServiceAttachmentStream stream = attachment.asStream();
1599             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
1600         }
1601     }
1602
1603     public File getAttachmentFile(long attachmentId) {
1604         return new File(attachmentsPath, attachmentId + "");
1605     }
1606
1607     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException {
1608         IOUtils.createPrivateDirectories(attachmentsPath);
1609         return retrieveAttachment(pointer, getAttachmentFile(pointer.getId()), true);
1610     }
1611
1612     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException {
1613         if (storePreview && pointer.getPreview().isPresent()) {
1614             File previewFile = new File(outputFile + ".preview");
1615             try (OutputStream output = new FileOutputStream(previewFile)) {
1616                 byte[] preview = pointer.getPreview().get();
1617                 output.write(preview, 0, preview.length);
1618             } catch (FileNotFoundException e) {
1619                 e.printStackTrace();
1620                 return null;
1621             }
1622         }
1623
1624         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1625
1626         File tmpFile = IOUtils.createTempFile();
1627         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE)) {
1628             try (OutputStream output = new FileOutputStream(outputFile)) {
1629                 byte[] buffer = new byte[4096];
1630                 int read;
1631
1632                 while ((read = input.read(buffer)) != -1) {
1633                     output.write(buffer, 0, read);
1634                 }
1635             } catch (FileNotFoundException e) {
1636                 e.printStackTrace();
1637                 return null;
1638             }
1639         } finally {
1640             try {
1641                 Files.delete(tmpFile.toPath());
1642             } catch (IOException e) {
1643                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1644             }
1645         }
1646         return outputFile;
1647     }
1648
1649     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException {
1650         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1651         return messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE);
1652     }
1653
1654     @Override
1655     public boolean isRemote() {
1656         return false;
1657     }
1658
1659     private void sendGroups() throws IOException, UntrustedIdentityException {
1660         File groupsFile = IOUtils.createTempFile();
1661
1662         try {
1663             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1664                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1665                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1666                     ThreadInfo info = account.getThreadStore().getThread(Base64.encodeBytes(record.groupId));
1667                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1668                             new ArrayList<>(record.getMembers()), createGroupAvatarAttachment(record.groupId),
1669                             record.active, Optional.fromNullable(info != null ? info.messageExpirationTime : null),
1670                             Optional.fromNullable(record.color), record.blocked, Optional.fromNullable(record.inboxPosition), record.archived));
1671                 }
1672             }
1673
1674             if (groupsFile.exists() && groupsFile.length() > 0) {
1675                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1676                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1677                             .withStream(groupsFileStream)
1678                             .withContentType("application/octet-stream")
1679                             .withLength(groupsFile.length())
1680                             .build();
1681
1682                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1683                 }
1684             }
1685         } finally {
1686             try {
1687                 Files.delete(groupsFile.toPath());
1688             } catch (IOException e) {
1689                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1690             }
1691         }
1692     }
1693
1694     public void sendContacts() throws IOException, UntrustedIdentityException {
1695         File contactsFile = IOUtils.createTempFile();
1696
1697         try {
1698             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1699                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1700                 for (ContactInfo record : account.getContactStore().getContacts()) {
1701                     VerifiedMessage verifiedMessage = null;
1702                     ThreadInfo info = account.getThreadStore().getThread(record.number);
1703                     if (getIdentities().containsKey(record.number)) {
1704                         JsonIdentityKeyStore.Identity currentIdentity = null;
1705                         for (JsonIdentityKeyStore.Identity id : getIdentities().get(record.number)) {
1706                             if (currentIdentity == null || id.getDateAdded().after(currentIdentity.getDateAdded())) {
1707                                 currentIdentity = id;
1708                             }
1709                         }
1710                         if (currentIdentity != null) {
1711                             verifiedMessage = new VerifiedMessage(record.getAddress(), currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1712                         }
1713                     }
1714
1715                     ProfileKey profileKey = null;
1716                     try {
1717                         profileKey = record.profileKey == null ? null : new ProfileKey(Base64.decode(record.profileKey));
1718                     } catch (InvalidInputException ignored) {
1719                     }
1720                     out.write(new DeviceContact(record.getAddress(), Optional.fromNullable(record.name),
1721                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1722                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), record.blocked,
1723                             Optional.fromNullable(info != null ? info.messageExpirationTime : null),
1724                             Optional.fromNullable(record.inboxPosition), record.archived));
1725                 }
1726
1727                 if (account.getProfileKey() != null) {
1728                     // Send our own profile key as well
1729                     out.write(new DeviceContact(account.getSelfAddress(),
1730                             Optional.absent(), Optional.absent(),
1731                             Optional.absent(), Optional.absent(),
1732                             Optional.of(account.getProfileKey()),
1733                             false, Optional.absent(), Optional.absent(), false));
1734                 }
1735             }
1736
1737             if (contactsFile.exists() && contactsFile.length() > 0) {
1738                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1739                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1740                             .withStream(contactsFileStream)
1741                             .withContentType("application/octet-stream")
1742                             .withLength(contactsFile.length())
1743                             .build();
1744
1745                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1746                 }
1747             }
1748         } finally {
1749             try {
1750                 Files.delete(contactsFile.toPath());
1751             } catch (IOException e) {
1752                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1753             }
1754         }
1755     }
1756
1757     private void sendBlockedList() throws IOException, UntrustedIdentityException {
1758         List<SignalServiceAddress> addresses = new ArrayList<>();
1759         for (ContactInfo record : account.getContactStore().getContacts()) {
1760             if (record.blocked) {
1761                 addresses.add(record.getAddress());
1762             }
1763         }
1764         List<byte[]> groupIds = new ArrayList<>();
1765         for (GroupInfo record : account.getGroupStore().getGroups()) {
1766             if (record.blocked) {
1767                 groupIds.add(record.groupId);
1768             }
1769         }
1770         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
1771     }
1772
1773     private void sendVerifiedMessage(SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1774         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1775         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1776     }
1777
1778     public List<ContactInfo> getContacts() {
1779         return account.getContactStore().getContacts();
1780     }
1781
1782     public ContactInfo getContact(String number) {
1783         return account.getContactStore().getContact(number);
1784     }
1785
1786     public GroupInfo getGroup(byte[] groupId) {
1787         return account.getGroupStore().getGroup(groupId);
1788     }
1789
1790     public Map<String, List<JsonIdentityKeyStore.Identity>> getIdentities() {
1791         return account.getSignalProtocolStore().getIdentities();
1792     }
1793
1794     public Pair<String, List<JsonIdentityKeyStore.Identity>> getIdentities(String number) throws InvalidNumberException {
1795         String canonicalizedNumber = Utils.canonicalizeNumber(number, username);
1796         return new Pair<>(canonicalizedNumber, account.getSignalProtocolStore().getIdentities(canonicalizedNumber));
1797     }
1798
1799     /**
1800      * Trust this the identity with this fingerprint
1801      *
1802      * @param name        username of the identity
1803      * @param fingerprint Fingerprint
1804      */
1805     public boolean trustIdentityVerified(String name, byte[] fingerprint) {
1806         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1807         if (ids == null) {
1808             return false;
1809         }
1810         for (JsonIdentityKeyStore.Identity id : ids) {
1811             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1812                 continue;
1813             }
1814
1815             account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1816             try {
1817                 sendVerifiedMessage(new SignalServiceAddress(null, name), id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1818             } catch (IOException | UntrustedIdentityException e) {
1819                 e.printStackTrace();
1820             }
1821             account.save();
1822             return true;
1823         }
1824         return false;
1825     }
1826
1827     /**
1828      * Trust this the identity with this safety number
1829      *
1830      * @param name         username of the identity
1831      * @param safetyNumber Safety number
1832      */
1833     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) {
1834         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1835         if (ids == null) {
1836             return false;
1837         }
1838         for (JsonIdentityKeyStore.Identity id : ids) {
1839             if (!safetyNumber.equals(computeSafetyNumber(name, id.getIdentityKey()))) {
1840                 continue;
1841             }
1842
1843             account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1844             try {
1845                 sendVerifiedMessage(new SignalServiceAddress(null, name), id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1846             } catch (IOException | UntrustedIdentityException e) {
1847                 e.printStackTrace();
1848             }
1849             account.save();
1850             return true;
1851         }
1852         return false;
1853     }
1854
1855     /**
1856      * Trust all keys of this identity without verification
1857      *
1858      * @param name username of the identity
1859      */
1860     public boolean trustIdentityAllKeys(String name) {
1861         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1862         if (ids == null) {
1863             return false;
1864         }
1865         for (JsonIdentityKeyStore.Identity id : ids) {
1866             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
1867                 account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1868                 try {
1869                     sendVerifiedMessage(new SignalServiceAddress(null, name), id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1870                 } catch (IOException | UntrustedIdentityException e) {
1871                     e.printStackTrace();
1872                 }
1873             }
1874         }
1875         account.save();
1876         return true;
1877     }
1878
1879     public String computeSafetyNumber(String theirUsername, IdentityKey theirIdentityKey) {
1880         return Utils.computeSafetyNumber(username, getIdentity(), theirUsername, theirIdentityKey);
1881     }
1882
1883     public interface ReceiveMessageHandler {
1884
1885         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
1886     }
1887 }