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