Dbus get/setConfiguration methods

[signal-cli] / src / main / java / org / asamk / signal / dbus / DbusSignalImpl.java

diff --git a/src/main/java/org/asamk/signal/dbus/DbusSignalImpl.java b/src/main/java/org/asamk/signal/dbus/DbusSignalImpl.java
index c73918ef6c506a757d09cd19f05226d6953799d5..55f994753d642561e54d3e6095ade4469f9ce6d8 100644 (file)
--- a/src/main/java/org/asamk/signal/dbus/DbusSignalImpl.java
+++ b/src/main/java/org/asamk/signal/dbus/DbusSignalImpl.java
@@ -1,13 +1,14 @@
 package org.asamk.signal.dbus;
 
 import org.asamk.Signal;
 package org.asamk.signal.dbus;
 
 import org.asamk.Signal;

+import org.asamk.Signal.Error;

 import org.asamk.signal.BaseConfig;
 import org.asamk.signal.manager.AttachmentInvalidException;
 import org.asamk.signal.manager.Manager;
 import org.asamk.signal.manager.NotMasterDeviceException;
 import org.asamk.signal.manager.StickerPackInvalidException;
 import org.asamk.signal.manager.UntrustedIdentityException;
 import org.asamk.signal.BaseConfig;
 import org.asamk.signal.manager.AttachmentInvalidException;
 import org.asamk.signal.manager.Manager;
 import org.asamk.signal.manager.NotMasterDeviceException;
 import org.asamk.signal.manager.StickerPackInvalidException;
 import org.asamk.signal.manager.UntrustedIdentityException;

-import org.asamk.signal.manager.api.Device;
+import org.asamk.signal.manager.api.Identity;

 import org.asamk.signal.manager.api.Message;
 import org.asamk.signal.manager.api.RecipientIdentifier;
 import org.asamk.signal.manager.api.TypingAction;
 import org.asamk.signal.manager.api.Message;
 import org.asamk.signal.manager.api.RecipientIdentifier;
 import org.asamk.signal.manager.api.TypingAction;


@@ -17,9 +18,12 @@ import org.asamk.signal.manager.groups.GroupNotFoundException;
 import org.asamk.signal.manager.groups.GroupSendingNotAllowedException;
 import org.asamk.signal.manager.groups.LastGroupAdminException;
 import org.asamk.signal.manager.groups.NotAGroupMemberException;
 import org.asamk.signal.manager.groups.GroupSendingNotAllowedException;
 import org.asamk.signal.manager.groups.LastGroupAdminException;
 import org.asamk.signal.manager.groups.NotAGroupMemberException;

-import org.asamk.signal.manager.storage.identities.IdentityInfo;
+import org.asamk.signal.manager.storage.recipients.Profile;
+import org.asamk.signal.manager.storage.recipients.RecipientAddress;

 import org.asamk.signal.util.ErrorUtils;
 import org.asamk.signal.util.ErrorUtils;

-import org.asamk.signal.util.Util;
+import org.freedesktop.dbus.DBusPath;
+import org.freedesktop.dbus.connections.impl.DBusConnection;
+import org.freedesktop.dbus.exceptions.DBusException;

 import org.freedesktop.dbus.exceptions.DBusExecutionException;
 import org.whispersystems.libsignal.InvalidKeyException;
 import org.whispersystems.libsignal.util.Pair;
 import org.freedesktop.dbus.exceptions.DBusExecutionException;
 import org.whispersystems.libsignal.InvalidKeyException;
 import org.whispersystems.libsignal.util.Pair;


@@ -45,21 +49,27 @@ import java.util.UUID;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 

-import static org.asamk.signal.util.Util.getLegacyIdentifier;
-

 public class DbusSignalImpl implements Signal {
 
     private final Manager m;
 public class DbusSignalImpl implements Signal {
 
     private final Manager m;

+    private final DBusConnection connection;

     private final String objectPath;
 
     private final String objectPath;
 

-    public DbusSignalImpl(final Manager m, final String objectPath) {
+    private DBusPath thisDevice;
+    private final List<DBusPath> devices = new ArrayList<>();
+
+    public DbusSignalImpl(final Manager m, DBusConnection connection, final String objectPath) {

         this.m = m;
         this.m = m;

+        this.connection = connection;

         this.objectPath = objectPath;
     }
 
         this.objectPath = objectPath;
     }
 

-    @Override
-    public boolean isRemote() {
-        return false;
+    public void initObjects() {
+        updateDevices();
+    }
+
+    public void close() {
+        unExportDevices();

     }
 
     @Override
     }
 
     @Override


@@ -67,6 +77,11 @@ public class DbusSignalImpl implements Signal {
         return objectPath;
     }
 
         return objectPath;
     }
 

+    @Override
+    public String getSelfNumber() {
+        return m.getSelfNumber();
+    }
+

     @Override
     public void addDevice(String uri) {
         try {
     @Override
     public void addDevice(String uri) {
         try {


@@ -81,35 +96,51 @@ public class DbusSignalImpl implements Signal {
     }
 
     @Override
     }
 
     @Override

-    public void removeDevice(int deviceId) {
-        try {
-            m.removeLinkedDevices(deviceId);
-        } catch (IOException e) {
-            throw new Error.Failure(e.getClass().getSimpleName() + ": Error while removing device: " + e.getMessage());
-        }
+    public DBusPath getDevice(long deviceId) {
+        updateDevices();
+        return new DBusPath(getDeviceObjectPath(objectPath, deviceId));

     }
 
     @Override
     }
 
     @Override

-    public List<String> listDevices() {
-        List<Device> devices;
-        List<String> results = new ArrayList<String>();
+    public List<DBusPath> listDevices() {
+        updateDevices();
+        return this.devices;
+    }

 
 

+    private void updateDevices() {
+        List<org.asamk.signal.manager.api.Device> linkedDevices;

         try {
         try {

-            devices = m.getLinkedDevices();
+            linkedDevices = m.getLinkedDevices();

         } catch (IOException | Error.Failure e) {
             throw new Error.Failure("Failed to get linked devices: " + e.getMessage());
         }
 
         } catch (IOException | Error.Failure e) {
             throw new Error.Failure("Failed to get linked devices: " + e.getMessage());
         }
 

-        return devices.stream().map(d -> d.getName() == null ? "" : d.getName()).collect(Collectors.toList());
+        unExportDevices();
+
+        linkedDevices.forEach(d -> {
+            final var object = new DbusSignalDeviceImpl(d);
+            final var deviceObjectPath = object.getObjectPath();
+            try {
+                connection.exportObject(object);
+            } catch (DBusException e) {
+                e.printStackTrace();
+            }
+            if (d.isThisDevice()) {
+                thisDevice = new DBusPath(deviceObjectPath);
+            }
+            this.devices.add(new DBusPath(deviceObjectPath));
+        });
+    }
+
+    private void unExportDevices() {
+        this.devices.stream().map(DBusPath::getPath).forEach(connection::unExportObject);
+        this.devices.clear();

     }
 
     @Override
     }
 
     @Override

-    public void updateDeviceName(String deviceName) {
-        try {
-            m.updateAccountAttributes(deviceName);
-        } catch (IOException | Signal.Error.Failure e) {
-            throw new Error.Failure("UpdateAccount error: " + e.getMessage());
-        }
+    public DBusPath getThisDevice() {
+        updateDevices();
+        return thisDevice;

     }
 
     @Override
     }
 
     @Override


@@ -123,7 +154,7 @@ public class DbusSignalImpl implements Signal {
     public long sendMessage(final String message, final List<String> attachments, final List<String> recipients) {
         try {
             final var results = m.sendMessage(new Message(message, attachments),
     public long sendMessage(final String message, final List<String> attachments, final List<String> recipients) {
         try {
             final var results = m.sendMessage(new Message(message, attachments),

-                    getSingleRecipientIdentifiers(recipients, m.getUsername()).stream()
+                    getSingleRecipientIdentifiers(recipients, m.getSelfNumber()).stream()

                             .map(RecipientIdentifier.class::cast)
                             .collect(Collectors.toSet()));
 
                             .map(RecipientIdentifier.class::cast)
                             .collect(Collectors.toSet()));
 


@@ -153,7 +184,7 @@ public class DbusSignalImpl implements Signal {
     ) {
         try {
             final var results = m.sendRemoteDeleteMessage(targetSentTimestamp,
     ) {
         try {
             final var results = m.sendRemoteDeleteMessage(targetSentTimestamp,

-                    getSingleRecipientIdentifiers(recipients, m.getUsername()).stream()
+                    getSingleRecipientIdentifiers(recipients, m.getSelfNumber()).stream()

                             .map(RecipientIdentifier.class::cast)
                             .collect(Collectors.toSet()));
             checkSendMessageResults(results.getTimestamp(), results.getResults());
                             .map(RecipientIdentifier.class::cast)
                             .collect(Collectors.toSet()));
             checkSendMessageResults(results.getTimestamp(), results.getResults());


@@ -205,9 +236,9 @@ public class DbusSignalImpl implements Signal {
         try {
             final var results = m.sendMessageReaction(emoji,
                     remove,
         try {
             final var results = m.sendMessageReaction(emoji,
                     remove,

-                    getSingleRecipientIdentifier(targetAuthor, m.getUsername()),
+                    getSingleRecipientIdentifier(targetAuthor, m.getSelfNumber()),

                     targetSentTimestamp,
                     targetSentTimestamp,

-                    getSingleRecipientIdentifiers(recipients, m.getUsername()).stream()
+                    getSingleRecipientIdentifiers(recipients, m.getSelfNumber()).stream()

                             .map(RecipientIdentifier.class::cast)
                             .collect(Collectors.toSet()));
             checkSendMessageResults(results.getTimestamp(), results.getResults());
                             .map(RecipientIdentifier.class::cast)
                             .collect(Collectors.toSet()));
             checkSendMessageResults(results.getTimestamp(), results.getResults());


@@ -227,7 +258,7 @@ public class DbusSignalImpl implements Signal {
             var recipients = new ArrayList<String>(1);
             recipients.add(recipient);
             m.sendTypingMessage(stop ? TypingAction.STOP : TypingAction.START,
             var recipients = new ArrayList<String>(1);
             recipients.add(recipient);
             m.sendTypingMessage(stop ? TypingAction.STOP : TypingAction.START,

-                    getSingleRecipientIdentifiers(recipients, m.getUsername()).stream()
+                    getSingleRecipientIdentifiers(recipients, m.getSelfNumber()).stream()

                             .map(RecipientIdentifier.class::cast)
                             .collect(Collectors.toSet()));
         } catch (IOException e) {
                             .map(RecipientIdentifier.class::cast)
                             .collect(Collectors.toSet()));
         } catch (IOException e) {


@@ -241,10 +272,10 @@ public class DbusSignalImpl implements Signal {
 
     @Override
     public void sendReadReceipt(
 
     @Override
     public void sendReadReceipt(

-            final String recipient, final List<Long> timestamps
+            final String recipient, final List<Long> messageIds

     ) throws Error.Failure, Error.UntrustedIdentity {
         try {
     ) throws Error.Failure, Error.UntrustedIdentity {
         try {

-            m.sendReadReceipt(getSingleRecipientIdentifier(recipient, m.getUsername()), timestamps);
+            m.sendReadReceipt(getSingleRecipientIdentifier(recipient, m.getSelfNumber()), messageIds);

         } catch (IOException e) {
             throw new Error.Failure(e.getMessage());
         } catch (UntrustedIdentityException e) {
         } catch (IOException e) {
             throw new Error.Failure(e.getMessage());
         } catch (UntrustedIdentityException e) {


@@ -276,7 +307,7 @@ public class DbusSignalImpl implements Signal {
     ) throws Error.AttachmentInvalid, Error.Failure, Error.UntrustedIdentity {
         try {
             final var results = m.sendMessage(new Message(message, attachments),
     ) throws Error.AttachmentInvalid, Error.Failure, Error.UntrustedIdentity {
         try {
             final var results = m.sendMessage(new Message(message, attachments),

-                    Set.of(new RecipientIdentifier.NoteToSelf()));
+                    Set.of(RecipientIdentifier.NoteToSelf.INSTANCE));

             checkSendMessageResults(results.getTimestamp(), results.getResults());
             return results.getTimestamp();
         } catch (AttachmentInvalidException e) {
             checkSendMessageResults(results.getTimestamp(), results.getResults());
             return results.getTimestamp();
         } catch (AttachmentInvalidException e) {


@@ -291,7 +322,7 @@ public class DbusSignalImpl implements Signal {
     @Override
     public void sendEndSessionMessage(final List<String> recipients) {
         try {
     @Override
     public void sendEndSessionMessage(final List<String> recipients) {
         try {

-            final var results = m.sendEndSessionMessage(getSingleRecipientIdentifiers(recipients, m.getUsername()));
+            final var results = m.sendEndSessionMessage(getSingleRecipientIdentifiers(recipients, m.getSelfNumber()));

             checkSendMessageResults(results.getTimestamp(), results.getResults());
         } catch (IOException e) {
             throw new Error.Failure(e.getMessage());
             checkSendMessageResults(results.getTimestamp(), results.getResults());
         } catch (IOException e) {
             throw new Error.Failure(e.getMessage());


@@ -325,7 +356,7 @@ public class DbusSignalImpl implements Signal {
         try {
             final var results = m.sendMessageReaction(emoji,
                     remove,
         try {
             final var results = m.sendMessageReaction(emoji,
                     remove,

-                    getSingleRecipientIdentifier(targetAuthor, m.getUsername()),
+                    getSingleRecipientIdentifier(targetAuthor, m.getSelfNumber()),

                     targetSentTimestamp,
                     Set.of(new RecipientIdentifier.Group(getGroupId(groupId))));
             checkSendMessageResults(results.getTimestamp(), results.getResults());
                     targetSentTimestamp,
                     Set.of(new RecipientIdentifier.Group(getGroupId(groupId))));
             checkSendMessageResults(results.getTimestamp(), results.getResults());


@@ -341,13 +372,14 @@ public class DbusSignalImpl implements Signal {
     // the profile name
     @Override
     public String getContactName(final String number) {
     // the profile name
     @Override
     public String getContactName(final String number) {

-        return m.getContactOrProfileName(getSingleRecipientIdentifier(number, m.getUsername()));
+        final var name = m.getContactOrProfileName(getSingleRecipientIdentifier(number, m.getSelfNumber()));
+        return name == null ? "" : name;

     }
 
     @Override
     public void setContactName(final String number, final String name) {
         try {
     }
 
     @Override
     public void setContactName(final String number, final String name) {
         try {

-            m.setContactName(getSingleRecipientIdentifier(number, m.getUsername()), name);
+            m.setContactName(getSingleRecipientIdentifier(number, m.getSelfNumber()), name);

         } catch (NotMasterDeviceException e) {
             throw new Error.Failure("This command doesn't work on linked devices.");
         } catch (UnregisteredUserException e) {
         } catch (NotMasterDeviceException e) {
             throw new Error.Failure("This command doesn't work on linked devices.");
         } catch (UnregisteredUserException e) {


@@ -358,7 +390,7 @@ public class DbusSignalImpl implements Signal {
     @Override
     public void setExpirationTimer(final String number, final int expiration) {
         try {
     @Override
     public void setExpirationTimer(final String number, final int expiration) {
         try {

-            m.setExpirationTimer(getSingleRecipientIdentifier(number, m.getUsername()), expiration);
+            m.setExpirationTimer(getSingleRecipientIdentifier(number, m.getSelfNumber()), expiration);

         } catch (IOException e) {
             throw new Error.Failure(e.getMessage());
         }
         } catch (IOException e) {
             throw new Error.Failure(e.getMessage());
         }


@@ -367,7 +399,7 @@ public class DbusSignalImpl implements Signal {
     @Override
     public void setContactBlocked(final String number, final boolean blocked) {
         try {
     @Override
     public void setContactBlocked(final String number, final boolean blocked) {
         try {

-            m.setContactBlocked(getSingleRecipientIdentifier(number, m.getUsername()), blocked);
+            m.setContactBlocked(getSingleRecipientIdentifier(number, m.getSelfNumber()), blocked);

         } catch (NotMasterDeviceException e) {
             throw new Error.Failure("This command doesn't work on linked devices.");
         } catch (IOException e) {
         } catch (NotMasterDeviceException e) {
             throw new Error.Failure("This command doesn't work on linked devices.");
         } catch (IOException e) {


@@ -399,7 +431,7 @@ public class DbusSignalImpl implements Signal {
     @Override
     public String getGroupName(final byte[] groupId) {
         var group = m.getGroup(getGroupId(groupId));
     @Override
     public String getGroupName(final byte[] groupId) {
         var group = m.getGroup(getGroupId(groupId));

-        if (group == null) {
+        if (group == null || group.getTitle() == null) {

             return "";
         } else {
             return group.getTitle();
             return "";
         } else {
             return group.getTitle();


@@ -412,27 +444,17 @@ public class DbusSignalImpl implements Signal {
         if (group == null) {
             return List.of();
         } else {
         if (group == null) {
             return List.of();
         } else {

-            return group.getMembers()
-                    .stream()
-                    .map(m::resolveSignalServiceAddress)
-                    .map(Util::getLegacyIdentifier)
-                    .collect(Collectors.toList());
+            return group.getMembers().stream().map(RecipientAddress::getLegacyIdentifier).collect(Collectors.toList());

         }
     }
 
     @Override
     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) {
         try {
         }
     }
 
     @Override
     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) {
         try {

-            if (groupId.length == 0) {
-                groupId = null;
-            }
-            if (name.isEmpty()) {
-                name = null;
-            }
-            if (avatar.isEmpty()) {
-                avatar = null;
-            }
-            final var memberIdentifiers = getSingleRecipientIdentifiers(members, m.getUsername());
+            groupId = nullIfEmpty(groupId);
+            name = nullIfEmpty(name);
+            avatar = nullIfEmpty(avatar);
+            final var memberIdentifiers = getSingleRecipientIdentifiers(members, m.getSelfNumber());

             if (groupId == null) {
                 final var results = m.createGroup(name, memberIdentifiers, avatar == null ? null : new File(avatar));
                 checkSendMessageResults(results.second().getTimestamp(), results.second().getResults());
             if (groupId == null) {
                 final var results = m.createGroup(name, memberIdentifiers, avatar == null ? null : new File(avatar));
                 checkSendMessageResults(results.second().getTimestamp(), results.second().getResults());


@@ -499,20 +521,22 @@ public class DbusSignalImpl implements Signal {
 
     @Override
     public void updateProfile(
 
     @Override
     public void updateProfile(

-            final String givenName,
-            final String familyName,
-            final String about,
-            final String aboutEmoji,
+            String givenName,
+            String familyName,
+            String about,
+            String aboutEmoji,

             String avatarPath,
             final boolean removeAvatar
             String avatarPath,
             final boolean removeAvatar

-            ) {
+    ) {

         try {
         try {

-            if (avatarPath.isEmpty()) {
-                avatarPath = null;
-            }
+            givenName = nullIfEmpty(givenName);
+            familyName = nullIfEmpty(familyName);
+            about = nullIfEmpty(about);
+            aboutEmoji = nullIfEmpty(aboutEmoji);
+            avatarPath = nullIfEmpty(avatarPath);

             Optional<File> avatarFile = removeAvatar
                     ? Optional.absent()
             Optional<File> avatarFile = removeAvatar
                     ? Optional.absent()

-                            : avatarPath == null ? null : Optional.of(new File(avatarPath));
+                    : avatarPath == null ? null : Optional.of(new File(avatarPath));

             m.setProfile(givenName, familyName, about, aboutEmoji, avatarFile);
         } catch (IOException e) {
             throw new Error.Failure(e.getMessage());
             m.setProfile(givenName, familyName, about, aboutEmoji, avatarFile);
         } catch (IOException e) {
             throw new Error.Failure(e.getMessage());


@@ -527,17 +551,7 @@ public class DbusSignalImpl implements Signal {
             String avatarPath,
             final boolean removeAvatar
     ) {
             String avatarPath,
             final boolean removeAvatar
     ) {

-        try {
-            if (avatarPath.isEmpty()) {
-                avatarPath = null;
-            }
-            Optional<File> avatarFile = removeAvatar
-                    ? Optional.absent()
-                    : avatarPath == null ? null : Optional.of(new File(avatarPath));
-            m.setProfile(name, null, about, aboutEmoji, avatarFile);
-        } catch (IOException e) {
-            throw new Error.Failure(e.getMessage());
-        }
+        updateProfile(name, "", about, aboutEmoji, avatarPath, removeAvatar);

     }
 
     @Override
     }
 
     @Override


@@ -573,10 +587,9 @@ public class DbusSignalImpl implements Signal {
     // all numbers the system knows
     @Override
     public List<String> listNumbers() {
     // all numbers the system knows
     @Override
     public List<String> listNumbers() {

-        return Stream.concat(m.getIdentities().stream().map(IdentityInfo::getRecipientId),
+        return Stream.concat(m.getIdentities().stream().map(Identity::getRecipient),

                 m.getContacts().stream().map(Pair::first))
                 m.getContacts().stream().map(Pair::first))

-                .map(m::resolveSignalServiceAddress)
-                .map(a -> a.getNumber().orNull())
+                .map(a -> a.getNumber().orElse(null))

                 .filter(Objects::nonNull)
                 .distinct()
                 .collect(Collectors.toList());
                 .filter(Objects::nonNull)
                 .distinct()
                 .collect(Collectors.toList());


@@ -589,16 +602,19 @@ public class DbusSignalImpl implements Signal {
         var contacts = m.getContacts();
         for (var c : contacts) {
             if (name.equals(c.second().getName())) {
         var contacts = m.getContacts();
         for (var c : contacts) {
             if (name.equals(c.second().getName())) {

-                numbers.add(getLegacyIdentifier(m.resolveSignalServiceAddress(c.first())));
+                numbers.add(c.first().getLegacyIdentifier());

             }
         }
         // Try profiles if no contact name was found
         for (var identity : m.getIdentities()) {
             }
         }
         // Try profiles if no contact name was found
         for (var identity : m.getIdentities()) {

-            final var recipientId = identity.getRecipientId();
-            final var address = m.resolveSignalServiceAddress(recipientId);
-            var number = address.getNumber().orNull();
+            final var address = identity.getRecipient();
+            var number = address.getNumber().orElse(null);

             if (number != null) {
             if (number != null) {

-                var profile = m.getRecipientProfile(recipientId);
+                Profile profile = null;
+                try {
+                    profile = m.getRecipientProfile(RecipientIdentifier.Single.fromAddress(address));
+                } catch (UnregisteredUserException ignored) {
+                }

                 if (profile != null && profile.getDisplayName().equals(name)) {
                     numbers.add(number);
                 }
                 if (profile != null && profile.getDisplayName().equals(name)) {
                     numbers.add(number);
                 }


@@ -639,7 +655,7 @@ public class DbusSignalImpl implements Signal {
 
     @Override
     public boolean isContactBlocked(final String number) {
 
     @Override
     public boolean isContactBlocked(final String number) {

-        return m.isContactBlocked(getSingleRecipientIdentifier(number, m.getUsername()));
+        return m.isContactBlocked(getSingleRecipientIdentifier(number, m.getSelfNumber()));

     }
 
     @Override
     }
 
     @Override


@@ -658,7 +674,7 @@ public class DbusSignalImpl implements Signal {
         if (group == null) {
             return false;
         } else {
         if (group == null) {
             return false;
         } else {

-            return group.isMember(m.getSelfRecipientId());
+            return group.isMember();

         }
     }
 
         }
     }
 


@@ -668,12 +684,36 @@ public class DbusSignalImpl implements Signal {
         try {
             return m.uploadStickerPack(path).toString();
         } catch (IOException e) {
         try {
             return m.uploadStickerPack(path).toString();
         } catch (IOException e) {

-            throw new Error.Failure("Upload error (maybe image size is too large):" + e.getMessage());
+            throw new Error.IOError("Upload error (maybe image size is too large):" + e.getMessage());

         } catch (StickerPackInvalidException e) {
             throw new Error.Failure("Invalid sticker pack: " + e.getMessage());
         }
     }
 
         } catch (StickerPackInvalidException e) {
             throw new Error.Failure("Invalid sticker pack: " + e.getMessage());
         }
     }
 

+    @Override
+    public void setConfiguration(boolean readReceipts, boolean unidentifiedDeliveryIndicators, boolean typingIndicators, boolean linkPreviews) {
+          try {
+              m.updateConfiguration(readReceipts, unidentifiedDeliveryIndicators, typingIndicators, linkPreviews);
+          } catch (IOException e) {
+              throw new Error.IOError("UpdateAccount error: " + e.getMessage());
+          } catch (NotMasterDeviceException e) {
+              throw new Error.UserError("This command doesn't work on linked devices.");
+          }
+    }
+
+    @Override
+    public List<Boolean> getConfiguration() {
+        List<Boolean> config = new ArrayList<>(4);
+        try {
+            config = m.getConfiguration();
+        } catch (IOException e) {
+            throw new Error.IOError("Configuration storage error: " + e.getMessage());
+        } catch (NotMasterDeviceException e) {
+            throw new Error.UserError("This command doesn't work on linked devices.");
+        }
+        return config;
+    }
+

     private static void checkSendMessageResult(long timestamp, SendMessageResult result) throws DBusExecutionException {
         var error = ErrorUtils.getErrorMessageFromSendMessageResult(result);
 
     private static void checkSendMessageResult(long timestamp, SendMessageResult result) throws DBusExecutionException {
         var error = ErrorUtils.getErrorMessageFromSendMessageResult(result);
 


@@ -764,4 +804,61 @@ public class DbusSignalImpl implements Signal {
             throw new Error.InvalidGroupId("Invalid group id: " + e.getMessage());
         }
     }
             throw new Error.InvalidGroupId("Invalid group id: " + e.getMessage());
         }
     }

+
+    private byte[] nullIfEmpty(final byte[] array) {
+        return array.length == 0 ? null : array;
+    }
+
+    private String nullIfEmpty(final String name) {
+        return name.isEmpty() ? null : name;
+    }
+
+    private static String getDeviceObjectPath(String basePath, long deviceId) {
+        return basePath + "/Devices/" + deviceId;
+    }
+
+    public class DbusSignalDeviceImpl extends DbusProperties implements Signal.Device {
+
+        private final org.asamk.signal.manager.api.Device device;
+
+        public DbusSignalDeviceImpl(final org.asamk.signal.manager.api.Device device) {
+            super();
+            super.addPropertiesHandler(new DbusInterfacePropertiesHandler("org.asamk.Signal.Device",
+                    List.of(new DbusProperty<>("Id", device::getId),
+                            new DbusProperty<>("Name",
+                                    () -> device.getName() == null ? "" : device.getName(),
+                                    this::setDeviceName),
+                            new DbusProperty<>("Created", device::getCreated),
+                            new DbusProperty<>("LastSeen", device::getLastSeen))));
+            this.device = device;
+        }
+
+        @Override
+        public String getObjectPath() {
+            return getDeviceObjectPath(objectPath, device.getId());
+        }
+
+        @Override
+        public void removeDevice() throws Error.Failure {
+            try {
+                m.removeLinkedDevices(device.getId());
+                updateDevices();
+            } catch (IOException e) {
+                throw new Error.Failure(e.getMessage());
+            }
+        }
+
+        private void setDeviceName(String name) {
+            if (!device.isThisDevice()) {
+                throw new Error.Failure("Only the name of this device can be changed");
+            }
+            try {
+                m.updateAccountAttributes(name);
+                // update device list
+                updateDevices();
+            } catch (IOException e) {
+                throw new Error.Failure(e.getMessage());
+            }
+        }
+    }

 }
 }