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