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

   1 package org.asamk.signal.dbus;
   2
   3 import org.asamk.Signal;
   4 import org.asamk.Signal.Error;
   5 import org.asamk.signal.BaseConfig;
   6 import org.asamk.signal.manager.AttachmentInvalidException;
   7 import org.asamk.signal.manager.Manager;
   8 import org.asamk.signal.manager.NotMasterDeviceException;
   9 import org.asamk.signal.manager.StickerPackInvalidException;
  10 import org.asamk.signal.manager.UntrustedIdentityException;
  11 import org.asamk.signal.manager.api.Identity;
  12 import org.asamk.signal.manager.api.Message;
  13 import org.asamk.signal.manager.api.RecipientIdentifier;
  14 import org.asamk.signal.manager.api.TypingAction;
  15 import org.asamk.signal.manager.groups.GroupId;
  16 import org.asamk.signal.manager.groups.GroupInviteLinkUrl;
  17 import org.asamk.signal.manager.groups.GroupNotFoundException;
  18 import org.asamk.signal.manager.groups.GroupSendingNotAllowedException;
  19 import org.asamk.signal.manager.groups.LastGroupAdminException;
  20 import org.asamk.signal.manager.groups.NotAGroupMemberException;
  21 import org.asamk.signal.manager.storage.recipients.Profile;
  22 import org.asamk.signal.manager.storage.recipients.RecipientAddress;
  23 import org.asamk.signal.util.ErrorUtils;
  24 import org.freedesktop.dbus.DBusPath;
  25 import org.freedesktop.dbus.connections.impl.DBusConnection;
  26 import org.freedesktop.dbus.exceptions.DBusException;
  27 import org.freedesktop.dbus.exceptions.DBusExecutionException;
  28 import org.whispersystems.libsignal.InvalidKeyException;
  29 import org.whispersystems.libsignal.util.Pair;
  30 import org.whispersystems.libsignal.util.guava.Optional;
  31 import org.whispersystems.signalservice.api.groupsv2.GroupLinkNotActiveException;
  32 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  33 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
  34 import org.whispersystems.signalservice.api.util.InvalidNumberException;
  35 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedResponseException;
  36
  37 import java.io.File;
  38 import java.io.IOException;
  39 import java.net.URI;
  40 import java.net.URISyntaxException;
  41 import java.util.ArrayList;
  42 import java.util.Collection;
  43 import java.util.HashSet;
  44 import java.util.List;
  45 import java.util.Map;
  46 import java.util.Objects;
  47 import java.util.Set;
  48 import java.util.UUID;
  49 import java.util.stream.Collectors;
  50 import java.util.stream.Stream;
  51
  52 public class DbusSignalImpl implements Signal {
  53
  54     private final Manager m;
  55     private final DBusConnection connection;
  56     private final String objectPath;
  57
  58     private DBusPath thisDevice;
  59     private final List<DBusPath> devices = new ArrayList<>();
  60
  61     public DbusSignalImpl(final Manager m, DBusConnection connection, final String objectPath) {
  62         this.m = m;
  63         this.connection = connection;
  64         this.objectPath = objectPath;
  65     }
  66
  67     public void initObjects() {
  68         updateDevices();
  69     }
  70
  71     public void close() {
  72         unExportDevices();
  73     }
  74
  75     @Override
  76     public String getObjectPath() {
  77         return objectPath;
  78     }
  79
  80     @Override
  81     public String getSelfNumber() {
  82         return m.getSelfNumber();
  83     }
  84
  85     @Override
  86     public void addDevice(String uri) {
  87         try {
  88             m.addDeviceLink(new URI(uri));
  89         } catch (IOException | InvalidKeyException e) {
  90             throw new Error.Failure(e.getClass().getSimpleName() + " Add device link failed. " + e.getMessage());
  91         } catch (URISyntaxException e) {
  92             throw new Error.InvalidUri(e.getClass().getSimpleName()
  93                     + " Device link uri has invalid format: "
  94                     + e.getMessage());
  95         }
  96     }
  97
  98     @Override
  99     public DBusPath getDevice(long deviceId) {
 100         updateDevices();
 101         return new DBusPath(getDeviceObjectPath(objectPath, deviceId));
 102     }
 103
 104     @Override
 105     public List<DBusPath> listDevices() {
 106         updateDevices();
 107         return this.devices;
 108     }
 109
 110     private void updateDevices() {
 111         List<org.asamk.signal.manager.api.Device> linkedDevices;
 112         try {
 113             linkedDevices = m.getLinkedDevices();
 114         } catch (IOException | Error.Failure e) {
 115             throw new Error.Failure("Failed to get linked devices: " + e.getMessage());
 116         }
 117
 118         unExportDevices();
 119
 120         linkedDevices.forEach(d -> {
 121             final var object = new DbusSignalDeviceImpl(d);
 122             final var deviceObjectPath = object.getObjectPath();
 123             try {
 124                 connection.exportObject(object);
 125             } catch (DBusException e) {
 126                 e.printStackTrace();
 127             }
 128             if (d.isThisDevice()) {
 129                 thisDevice = new DBusPath(deviceObjectPath);
 130             }
 131             this.devices.add(new DBusPath(deviceObjectPath));
 132         });
 133     }
 134
 135     private void unExportDevices() {
 136         this.devices.stream().map(DBusPath::getPath).forEach(connection::unExportObject);
 137         this.devices.clear();
 138     }
 139
 140     @Override
 141     public DBusPath getThisDevice() {
 142         updateDevices();
 143         return thisDevice;
 144     }
 145
 146     @Override
 147     public long sendMessage(final String message, final List<String> attachments, final String recipient) {
 148         var recipients = new ArrayList<String>(1);
 149         recipients.add(recipient);
 150         return sendMessage(message, attachments, recipients);
 151     }
 152
 153     @Override
 154     public long sendMessage(final String message, final List<String> attachments, final List<String> recipients) {
 155         try {
 156             final var results = m.sendMessage(new Message(message, attachments),
 157                     getSingleRecipientIdentifiers(recipients, m.getSelfNumber()).stream()
 158                             .map(RecipientIdentifier.class::cast)
 159                             .collect(Collectors.toSet()));
 160
 161             checkSendMessageResults(results.getTimestamp(), results.getResults());
 162             return results.getTimestamp();
 163         } catch (AttachmentInvalidException e) {
 164             throw new Error.AttachmentInvalid(e.getMessage());
 165         } catch (IOException e) {
 166             throw new Error.Failure(e.getMessage());
 167         } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
 168             throw new Error.GroupNotFound(e.getMessage());
 169         }
 170     }
 171
 172     @Override
 173     public long sendRemoteDeleteMessage(
 174             final long targetSentTimestamp, final String recipient
 175     ) {
 176         var recipients = new ArrayList<String>(1);
 177         recipients.add(recipient);
 178         return sendRemoteDeleteMessage(targetSentTimestamp, recipients);
 179     }
 180
 181     @Override
 182     public long sendRemoteDeleteMessage(
 183             final long targetSentTimestamp, final List<String> recipients
 184     ) {
 185         try {
 186             final var results = m.sendRemoteDeleteMessage(targetSentTimestamp,
 187                     getSingleRecipientIdentifiers(recipients, m.getSelfNumber()).stream()
 188                             .map(RecipientIdentifier.class::cast)
 189                             .collect(Collectors.toSet()));
 190             checkSendMessageResults(results.getTimestamp(), results.getResults());
 191             return results.getTimestamp();
 192         } catch (IOException e) {
 193             throw new Error.Failure(e.getMessage());
 194         } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
 195             throw new Error.GroupNotFound(e.getMessage());
 196         }
 197     }
 198
 199     @Override
 200     public long sendGroupRemoteDeleteMessage(
 201             final long targetSentTimestamp, final byte[] groupId
 202     ) {
 203         try {
 204             final var results = m.sendRemoteDeleteMessage(targetSentTimestamp,
 205                     Set.of(new RecipientIdentifier.Group(getGroupId(groupId))));
 206             checkSendMessageResults(results.getTimestamp(), results.getResults());
 207             return results.getTimestamp();
 208         } catch (IOException e) {
 209             throw new Error.Failure(e.getMessage());
 210         } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
 211             throw new Error.GroupNotFound(e.getMessage());
 212         }
 213     }
 214
 215     @Override
 216     public long sendMessageReaction(
 217             final String emoji,
 218             final boolean remove,
 219             final String targetAuthor,
 220             final long targetSentTimestamp,
 221             final String recipient
 222     ) {
 223         var recipients = new ArrayList<String>(1);
 224         recipients.add(recipient);
 225         return sendMessageReaction(emoji, remove, targetAuthor, targetSentTimestamp, recipients);
 226     }
 227
 228     @Override
 229     public long sendMessageReaction(
 230             final String emoji,
 231             final boolean remove,
 232             final String targetAuthor,
 233             final long targetSentTimestamp,
 234             final List<String> recipients
 235     ) {
 236         try {
 237             final var results = m.sendMessageReaction(emoji,
 238                     remove,
 239                     getSingleRecipientIdentifier(targetAuthor, m.getSelfNumber()),
 240                     targetSentTimestamp,
 241                     getSingleRecipientIdentifiers(recipients, m.getSelfNumber()).stream()
 242                             .map(RecipientIdentifier.class::cast)
 243                             .collect(Collectors.toSet()));
 244             checkSendMessageResults(results.getTimestamp(), results.getResults());
 245             return results.getTimestamp();
 246         } catch (IOException e) {
 247             throw new Error.Failure(e.getMessage());
 248         } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
 249             throw new Error.GroupNotFound(e.getMessage());
 250         }
 251     }
 252
 253     @Override
 254     public void sendTyping(
 255             final String recipient, final boolean stop
 256     ) throws Error.Failure, Error.GroupNotFound, Error.UntrustedIdentity {
 257         try {
 258             var recipients = new ArrayList<String>(1);
 259             recipients.add(recipient);
 260             m.sendTypingMessage(stop ? TypingAction.STOP : TypingAction.START,
 261                     getSingleRecipientIdentifiers(recipients, m.getSelfNumber()).stream()
 262                             .map(RecipientIdentifier.class::cast)
 263                             .collect(Collectors.toSet()));
 264         } catch (IOException e) {
 265             throw new Error.Failure(e.getMessage());
 266         } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
 267             throw new Error.GroupNotFound(e.getMessage());
 268         } catch (UntrustedIdentityException e) {
 269             throw new Error.UntrustedIdentity(e.getMessage());
 270         }
 271     }
 272
 273     @Override
 274     public void sendReadReceipt(
 275             final String recipient, final List<Long> messageIds
 276     ) throws Error.Failure, Error.UntrustedIdentity {
 277         try {
 278             m.sendReadReceipt(getSingleRecipientIdentifier(recipient, m.getSelfNumber()), messageIds);
 279         } catch (IOException e) {
 280             throw new Error.Failure(e.getMessage());
 281         } catch (UntrustedIdentityException e) {
 282             throw new Error.UntrustedIdentity(e.getMessage());
 283         }
 284     }
 285
 286     @Override
 287     public void sendContacts() {
 288         try {
 289             m.sendContacts();
 290         } catch (IOException e) {
 291             throw new Error.Failure("SendContacts error: " + e.getMessage());
 292         }
 293     }
 294
 295     @Override
 296     public void sendSyncRequest() {
 297         try {
 298             m.requestAllSyncData();
 299         } catch (IOException e) {
 300             throw new Error.Failure("Request sync data error: " + e.getMessage());
 301         }
 302     }
 303
 304     @Override
 305     public long sendNoteToSelfMessage(
 306             final String message, final List<String> attachments
 307     ) throws Error.AttachmentInvalid, Error.Failure, Error.UntrustedIdentity {
 308         try {
 309             final var results = m.sendMessage(new Message(message, attachments),
 310                     Set.of(RecipientIdentifier.NoteToSelf.INSTANCE));
 311             checkSendMessageResults(results.getTimestamp(), results.getResults());
 312             return results.getTimestamp();
 313         } catch (AttachmentInvalidException e) {
 314             throw new Error.AttachmentInvalid(e.getMessage());
 315         } catch (IOException e) {
 316             throw new Error.Failure(e.getMessage());
 317         } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
 318             throw new Error.GroupNotFound(e.getMessage());
 319         }
 320     }
 321
 322     @Override
 323     public void sendEndSessionMessage(final List<String> recipients) {
 324         try {
 325             final var results = m.sendEndSessionMessage(getSingleRecipientIdentifiers(recipients, m.getSelfNumber()));
 326             checkSendMessageResults(results.getTimestamp(), results.getResults());
 327         } catch (IOException e) {
 328             throw new Error.Failure(e.getMessage());
 329         }
 330     }
 331
 332     @Override
 333     public long sendGroupMessage(final String message, final List<String> attachments, final byte[] groupId) {
 334         try {
 335             var results = m.sendMessage(new Message(message, attachments),
 336                     Set.of(new RecipientIdentifier.Group(getGroupId(groupId))));
 337             checkSendMessageResults(results.getTimestamp(), results.getResults());
 338             return results.getTimestamp();
 339         } catch (IOException e) {
 340             throw new Error.Failure(e.getMessage());
 341         } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
 342             throw new Error.GroupNotFound(e.getMessage());
 343         } catch (AttachmentInvalidException e) {
 344             throw new Error.AttachmentInvalid(e.getMessage());
 345         }
 346     }
 347
 348     @Override
 349     public long sendGroupMessageReaction(
 350             final String emoji,
 351             final boolean remove,
 352             final String targetAuthor,
 353             final long targetSentTimestamp,
 354             final byte[] groupId
 355     ) {
 356         try {
 357             final var results = m.sendMessageReaction(emoji,
 358                     remove,
 359                     getSingleRecipientIdentifier(targetAuthor, m.getSelfNumber()),
 360                     targetSentTimestamp,
 361                     Set.of(new RecipientIdentifier.Group(getGroupId(groupId))));
 362             checkSendMessageResults(results.getTimestamp(), results.getResults());
 363             return results.getTimestamp();
 364         } catch (IOException e) {
 365             throw new Error.Failure(e.getMessage());
 366         } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
 367             throw new Error.GroupNotFound(e.getMessage());
 368         }
 369     }
 370
 371     // Since contact names might be empty if not defined, also potentially return
 372     // the profile name
 373     @Override
 374     public String getContactName(final String number) {
 375         final var name = m.getContactOrProfileName(getSingleRecipientIdentifier(number, m.getSelfNumber()));
 376         return name == null ? "" : name;
 377     }
 378
 379     @Override
 380     public void setContactName(final String number, final String name) {
 381         try {
 382             m.setContactName(getSingleRecipientIdentifier(number, m.getSelfNumber()), name);
 383         } catch (NotMasterDeviceException e) {
 384             throw new Error.Failure("This command doesn't work on linked devices.");
 385         } catch (UnregisteredUserException e) {
 386             throw new Error.Failure("Contact is not registered.");
 387         }
 388     }
 389
 390     @Override
 391     public void setExpirationTimer(final String number, final int expiration) {
 392         try {
 393             m.setExpirationTimer(getSingleRecipientIdentifier(number, m.getSelfNumber()), expiration);
 394         } catch (IOException e) {
 395             throw new Error.Failure(e.getMessage());
 396         }
 397     }
 398
 399     @Override
 400     public void setContactBlocked(final String number, final boolean blocked) {
 401         try {
 402             m.setContactBlocked(getSingleRecipientIdentifier(number, m.getSelfNumber()), blocked);
 403         } catch (NotMasterDeviceException e) {
 404             throw new Error.Failure("This command doesn't work on linked devices.");
 405         } catch (IOException e) {
 406             throw new Error.Failure(e.getMessage());
 407         }
 408     }
 409
 410     @Override
 411     public void setGroupBlocked(final byte[] groupId, final boolean blocked) {
 412         try {
 413             m.setGroupBlocked(getGroupId(groupId), blocked);
 414         } catch (GroupNotFoundException e) {
 415             throw new Error.GroupNotFound(e.getMessage());
 416         } catch (IOException e) {
 417             throw new Error.Failure(e.getMessage());
 418         }
 419     }
 420
 421     @Override
 422     public List<byte[]> getGroupIds() {
 423         var groups = m.getGroups();
 424         var ids = new ArrayList<byte[]>(groups.size());
 425         for (var group : groups) {
 426             ids.add(group.getGroupId().serialize());
 427         }
 428         return ids;
 429     }
 430
 431     @Override
 432     public String getGroupName(final byte[] groupId) {
 433         var group = m.getGroup(getGroupId(groupId));
 434         if (group == null || group.getTitle() == null) {
 435             return "";
 436         } else {
 437             return group.getTitle();
 438         }
 439     }
 440
 441     @Override
 442     public List<String> getGroupMembers(final byte[] groupId) {
 443         var group = m.getGroup(getGroupId(groupId));
 444         if (group == null) {
 445             return List.of();
 446         } else {
 447             return group.getMembers().stream().map(RecipientAddress::getLegacyIdentifier).collect(Collectors.toList());
 448         }
 449     }
 450
 451     @Override
 452     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) {
 453         try {
 454             groupId = nullIfEmpty(groupId);
 455             name = nullIfEmpty(name);
 456             avatar = nullIfEmpty(avatar);
 457             final var memberIdentifiers = getSingleRecipientIdentifiers(members, m.getSelfNumber());
 458             if (groupId == null) {
 459                 final var results = m.createGroup(name, memberIdentifiers, avatar == null ? null : new File(avatar));
 460                 checkSendMessageResults(results.second().getTimestamp(), results.second().getResults());
 461                 return results.first().serialize();
 462             } else {
 463                 final var results = m.updateGroup(getGroupId(groupId),
 464                         name,
 465                         null,
 466                         memberIdentifiers,
 467                         null,
 468                         null,
 469                         null,
 470                         false,
 471                         null,
 472                         null,
 473                         null,
 474                         avatar == null ? null : new File(avatar),
 475                         null,
 476                         null);
 477                 if (results != null) {
 478                     checkSendMessageResults(results.getTimestamp(), results.getResults());
 479                 }
 480                 return groupId;
 481             }
 482         } catch (IOException e) {
 483             throw new Error.Failure(e.getMessage());
 484         } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
 485             throw new Error.GroupNotFound(e.getMessage());
 486         } catch (AttachmentInvalidException e) {
 487             throw new Error.AttachmentInvalid(e.getMessage());
 488         }
 489     }
 490
 491     @Override
 492     public boolean isRegistered() {
 493         return true;
 494     }
 495
 496     @Override
 497     public boolean isRegistered(String number) {
 498         var result = isRegistered(List.of(number));
 499         return result.get(0);
 500     }
 501
 502     @Override
 503     public List<Boolean> isRegistered(List<String> numbers) {
 504         var results = new ArrayList<Boolean>();
 505         if (numbers.isEmpty()) {
 506             return results;
 507         }
 508
 509         Map<String, Pair<String, UUID>> registered;
 510         try {
 511             registered = m.areUsersRegistered(new HashSet<>(numbers));
 512         } catch (IOException e) {
 513             throw new Error.Failure(e.getMessage());
 514         }
 515
 516         return numbers.stream().map(number -> {
 517             var uuid = registered.get(number).second();
 518             return uuid != null;
 519         }).collect(Collectors.toList());
 520     }
 521
 522     @Override
 523     public void updateProfile(
 524             String givenName,
 525             String familyName,
 526             String about,
 527             String aboutEmoji,
 528             String avatarPath,
 529             final boolean removeAvatar
 530     ) {
 531         try {
 532             givenName = nullIfEmpty(givenName);
 533             familyName = nullIfEmpty(familyName);
 534             about = nullIfEmpty(about);
 535             aboutEmoji = nullIfEmpty(aboutEmoji);
 536             avatarPath = nullIfEmpty(avatarPath);
 537             Optional<File> avatarFile = removeAvatar
 538                     ? Optional.absent()
 539                     : avatarPath == null ? null : Optional.of(new File(avatarPath));
 540             m.setProfile(givenName, familyName, about, aboutEmoji, avatarFile);
 541         } catch (IOException e) {
 542             throw new Error.Failure(e.getMessage());
 543         }
 544     }
 545
 546     @Override
 547     public void updateProfile(
 548             final String name,
 549             final String about,
 550             final String aboutEmoji,
 551             String avatarPath,
 552             final boolean removeAvatar
 553     ) {
 554         updateProfile(name, "", about, aboutEmoji, avatarPath, removeAvatar);
 555     }
 556
 557     @Override
 558     public void removePin() {
 559         try {
 560             m.setRegistrationLockPin(Optional.absent());
 561         } catch (UnauthenticatedResponseException e) {
 562             throw new Error.Failure("Remove pin failed with unauthenticated response: " + e.getMessage());
 563         } catch (IOException e) {
 564             throw new Error.Failure("Remove pin error: " + e.getMessage());
 565         }
 566     }
 567
 568     @Override
 569     public void setPin(String registrationLockPin) {
 570         try {
 571             m.setRegistrationLockPin(Optional.of(registrationLockPin));
 572         } catch (UnauthenticatedResponseException e) {
 573             throw new Error.Failure("Set pin error failed with unauthenticated response: " + e.getMessage());
 574         } catch (IOException e) {
 575             throw new Error.Failure("Set pin error: " + e.getMessage());
 576         }
 577     }
 578
 579     // Provide option to query a version string in order to react on potential
 580     // future interface changes
 581     @Override
 582     public String version() {
 583         return BaseConfig.PROJECT_VERSION;
 584     }
 585
 586     // Create a unique list of Numbers from Identities and Contacts to really get
 587     // all numbers the system knows
 588     @Override
 589     public List<String> listNumbers() {
 590         return Stream.concat(m.getIdentities().stream().map(Identity::getRecipient),
 591                 m.getContacts().stream().map(Pair::first))
 592                 .map(a -> a.getNumber().orElse(null))
 593                 .filter(Objects::nonNull)
 594                 .distinct()
 595                 .collect(Collectors.toList());
 596     }
 597
 598     @Override
 599     public List<String> getContactNumber(final String name) {
 600         // Contact names have precedence.
 601         var numbers = new ArrayList<String>();
 602         var contacts = m.getContacts();
 603         for (var c : contacts) {
 604             if (name.equals(c.second().getName())) {
 605                 numbers.add(c.first().getLegacyIdentifier());
 606             }
 607         }
 608         // Try profiles if no contact name was found
 609         for (var identity : m.getIdentities()) {
 610             final var address = identity.getRecipient();
 611             var number = address.getNumber().orElse(null);
 612             if (number != null) {
 613                 Profile profile = null;
 614                 try {
 615                     profile = m.getRecipientProfile(RecipientIdentifier.Single.fromAddress(address));
 616                 } catch (UnregisteredUserException ignored) {
 617                 }
 618                 if (profile != null && profile.getDisplayName().equals(name)) {
 619                     numbers.add(number);
 620                 }
 621             }
 622         }
 623         return numbers;
 624     }
 625
 626     @Override
 627     public void quitGroup(final byte[] groupId) {
 628         var group = getGroupId(groupId);
 629         try {
 630             m.quitGroup(group, Set.of());
 631         } catch (GroupNotFoundException | NotAGroupMemberException e) {
 632             throw new Error.GroupNotFound(e.getMessage());
 633         } catch (IOException | LastGroupAdminException e) {
 634             throw new Error.Failure(e.getMessage());
 635         }
 636     }
 637
 638     @Override
 639     public byte[] joinGroup(final String groupLink) {
 640         try {
 641             final var linkUrl = GroupInviteLinkUrl.fromUri(groupLink);
 642             if (linkUrl == null) {
 643                 throw new Error.Failure("Group link is invalid:");
 644             }
 645             final var result = m.joinGroup(linkUrl);
 646             return result.first().serialize();
 647         } catch (GroupInviteLinkUrl.InvalidGroupLinkException | GroupLinkNotActiveException e) {
 648             throw new Error.Failure("Group link is invalid: " + e.getMessage());
 649         } catch (GroupInviteLinkUrl.UnknownGroupLinkVersionException e) {
 650             throw new Error.Failure("Group link was created with an incompatible version: " + e.getMessage());
 651         } catch (IOException e) {
 652             throw new Error.Failure(e.getMessage());
 653         }
 654     }
 655
 656     @Override
 657     public boolean isContactBlocked(final String number) {
 658         return m.isContactBlocked(getSingleRecipientIdentifier(number, m.getSelfNumber()));
 659     }
 660
 661     @Override
 662     public boolean isGroupBlocked(final byte[] groupId) {
 663         var group = m.getGroup(getGroupId(groupId));
 664         if (group == null) {
 665             return false;
 666         } else {
 667             return group.isBlocked();
 668         }
 669     }
 670
 671     @Override
 672     public boolean isMember(final byte[] groupId) {
 673         var group = m.getGroup(getGroupId(groupId));
 674         if (group == null) {
 675             return false;
 676         } else {
 677             return group.isMember();
 678         }
 679     }
 680
 681     @Override
 682     public String uploadStickerPack(String stickerPackPath) {
 683         File path = new File(stickerPackPath);
 684         try {
 685             return m.uploadStickerPack(path).toString();
 686         } catch (IOException e) {
 687             throw new Error.IOError("Upload error (maybe image size is too large):" + e.getMessage());
 688         } catch (StickerPackInvalidException e) {
 689             throw new Error.Failure("Invalid sticker pack: " + e.getMessage());
 690         }
 691     }
 692
 693     @Override
 694     public void setConfiguration(boolean readReceipts, boolean unidentifiedDeliveryIndicators, boolean typingIndicators, boolean linkPreviews) {
 695           try {
 696               m.updateConfiguration(readReceipts, unidentifiedDeliveryIndicators, typingIndicators, linkPreviews);
 697           } catch (IOException e) {
 698               throw new Error.IOError("UpdateAccount error: " + e.getMessage());
 699           } catch (NotMasterDeviceException e) {
 700               throw new Error.UserError("This command doesn't work on linked devices.");
 701           }
 702     }
 703
 704     @Override
 705     public List<Boolean> getConfiguration() {
 706         List<Boolean> config = new ArrayList<>(4);
 707         try {
 708             config = m.getConfiguration();
 709         } catch (IOException e) {
 710             throw new Error.IOError("Configuration storage error: " + e.getMessage());
 711         } catch (NotMasterDeviceException e) {
 712             throw new Error.UserError("This command doesn't work on linked devices.");
 713         }
 714         return config;
 715     }
 716
 717     private static void checkSendMessageResult(long timestamp, SendMessageResult result) throws DBusExecutionException {
 718         var error = ErrorUtils.getErrorMessageFromSendMessageResult(result);
 719
 720         if (error == null) {
 721             return;
 722         }
 723
 724         final var message = timestamp + "\nFailed to send message:\n" + error + '\n';
 725
 726         if (result.getIdentityFailure() != null) {
 727             throw new Error.UntrustedIdentity(message);
 728         } else {
 729             throw new Error.Failure(message);
 730         }
 731     }
 732
 733     private static void checkSendMessageResults(
 734             long timestamp, Map<RecipientIdentifier, List<SendMessageResult>> results
 735     ) throws DBusExecutionException {
 736         final var sendMessageResults = results.values().stream().findFirst();
 737         if (results.size() == 1 && sendMessageResults.get().size() == 1) {
 738             checkSendMessageResult(timestamp, sendMessageResults.get().stream().findFirst().get());
 739             return;
 740         }
 741
 742         var errors = ErrorUtils.getErrorMessagesFromSendMessageResults(results);
 743         if (errors.size() == 0) {
 744             return;
 745         }
 746
 747         var message = new StringBuilder();
 748         message.append(timestamp).append('\n');
 749         message.append("Failed to send (some) messages:\n");
 750         for (var error : errors) {
 751             message.append(error).append('\n');
 752         }
 753
 754         throw new Error.Failure(message.toString());
 755     }
 756
 757     private static void checkSendMessageResults(
 758             long timestamp, Collection<SendMessageResult> results
 759     ) throws DBusExecutionException {
 760         if (results.size() == 1) {
 761             checkSendMessageResult(timestamp, results.stream().findFirst().get());
 762             return;
 763         }
 764
 765         var errors = ErrorUtils.getErrorMessagesFromSendMessageResults(results);
 766         if (errors.size() == 0) {
 767             return;
 768         }
 769
 770         var message = new StringBuilder();
 771         message.append(timestamp).append('\n');
 772         message.append("Failed to send (some) messages:\n");
 773         for (var error : errors) {
 774             message.append(error).append('\n');
 775         }
 776
 777         throw new Error.Failure(message.toString());
 778     }
 779
 780     private static Set<RecipientIdentifier.Single> getSingleRecipientIdentifiers(
 781             final Collection<String> recipientStrings, final String localNumber
 782     ) throws DBusExecutionException {
 783         final var identifiers = new HashSet<RecipientIdentifier.Single>();
 784         for (var recipientString : recipientStrings) {
 785             identifiers.add(getSingleRecipientIdentifier(recipientString, localNumber));
 786         }
 787         return identifiers;
 788     }
 789
 790     private static RecipientIdentifier.Single getSingleRecipientIdentifier(
 791             final String recipientString, final String localNumber
 792     ) throws DBusExecutionException {
 793         try {
 794             return RecipientIdentifier.Single.fromString(recipientString, localNumber);
 795         } catch (InvalidNumberException e) {
 796             throw new Error.InvalidNumber(e.getMessage());
 797         }
 798     }
 799
 800     private static GroupId getGroupId(byte[] groupId) throws DBusExecutionException {
 801         try {
 802             return GroupId.unknownVersion(groupId);
 803         } catch (Throwable e) {
 804             throw new Error.InvalidGroupId("Invalid group id: " + e.getMessage());
 805         }
 806     }
 807
 808     private byte[] nullIfEmpty(final byte[] array) {
 809         return array.length == 0 ? null : array;
 810     }
 811
 812     private String nullIfEmpty(final String name) {
 813         return name.isEmpty() ? null : name;
 814     }
 815
 816     private static String getDeviceObjectPath(String basePath, long deviceId) {
 817         return basePath + "/Devices/" + deviceId;
 818     }
 819
 820     public class DbusSignalDeviceImpl extends DbusProperties implements Signal.Device {
 821
 822         private final org.asamk.signal.manager.api.Device device;
 823
 824         public DbusSignalDeviceImpl(final org.asamk.signal.manager.api.Device device) {
 825             super();
 826             super.addPropertiesHandler(new DbusInterfacePropertiesHandler("org.asamk.Signal.Device",
 827                     List.of(new DbusProperty<>("Id", device::getId),
 828                             new DbusProperty<>("Name",
 829                                     () -> device.getName() == null ? "" : device.getName(),
 830                                     this::setDeviceName),
 831                             new DbusProperty<>("Created", device::getCreated),
 832                             new DbusProperty<>("LastSeen", device::getLastSeen))));
 833             this.device = device;
 834         }
 835
 836         @Override
 837         public String getObjectPath() {
 838             return getDeviceObjectPath(objectPath, device.getId());
 839         }
 840
 841         @Override
 842         public void removeDevice() throws Error.Failure {
 843             try {
 844                 m.removeLinkedDevices(device.getId());
 845                 updateDevices();
 846             } catch (IOException e) {
 847                 throw new Error.Failure(e.getMessage());
 848             }
 849         }
 850
 851         private void setDeviceName(String name) {
 852             if (!device.isThisDevice()) {
 853                 throw new Error.Failure("Only the name of this device can be changed");
 854             }
 855             try {
 856                 m.updateAccountAttributes(name);
 857                 // update device list
 858                 updateDevices();
 859             } catch (IOException e) {
 860                 throw new Error.Failure(e.getMessage());
 861             }
 862         }
 863     }
 864 }