Add possibility to update the device name

CHANGELOG.md

@@ -10,6 +10,7 @@
 
 ### Added
 - New global parameter `--trust-new-identities=always` to allow trusting any new identity key without verification
+- New parameter `--device-name` for `updateAccount` command to update the device name
 
 ## [0.8.5] - 2021-08-07
 ### Added

lib/src/main/java/org/asamk/signal/manager/Manager.java

@@ -311,7 +311,7 @@ public class Manager implements Closeable {
         if (account.getUuid() == null) {
             account.setUuid(dependencies.getAccountManager().getOwnUuid());
         }
-        updateAccountAttributes();
+        updateAccountAttributes(null);
     }
 
     /**
@@ -343,14 +343,21 @@ public class Manager implements Closeable {
         }));
     }
 
-    public void updateAccountAttributes() throws IOException {
+    public void updateAccountAttributes(String deviceName) throws IOException {
+        final String encryptedDeviceName;
+        if (deviceName == null) {
+            encryptedDeviceName = account.getEncryptedDeviceName();
+        } else {
+            final var privateKey = account.getIdentityKeyPair().getPrivateKey();
+            encryptedDeviceName = DeviceNameUtil.encryptDeviceName(deviceName, privateKey);
+            account.setEncryptedDeviceName(encryptedDeviceName);
+        }
         dependencies.getAccountManager()
-                .setAccountAttributes(account.getEncryptedDeviceName(),
+                .setAccountAttributes(encryptedDeviceName,
                         null,
                         account.getLocalRegistrationId(),
                         true,
-                        // set legacy pin only if no KBS master key is set
-                        account.getPinMasterKey() == null ? account.getRegistrationLockPin() : null,
+                        null,
                         account.getPinMasterKey() == null ? null : account.getPinMasterKey().deriveRegistrationLock(),
                         account.getSelfUnidentifiedAccessKey(),
                         account.isUnrestrictedUnidentifiedAccess(),

lib/src/main/java/org/asamk/signal/manager/storage/SignalAccount.java

@@ -818,6 +818,11 @@ public class SignalAccount implements Closeable {
         return encryptedDeviceName;
     }
 
+    public void setEncryptedDeviceName(final String encryptedDeviceName) {
+        this.encryptedDeviceName = encryptedDeviceName;
+        save();
+    }
+
     public int getDeviceId() {
         return deviceId;
     }

man/signal-cli.1.adoc

@@ -110,6 +110,9 @@ CAUTION: Only delete your account if you won't use this number again!
 Update the account attributes on the signal server.
 Can fix problems with receiving messages.
 
+*-n* NAME, *--device-name* NAME::
+Set a new device name for the main or linked device
+
 === setPin
 
 Set a registration lock pin, to prevent others from registering this number.

src/main/java/org/asamk/signal/commands/UpdateAccountCommand.java

@@ -20,14 +20,16 @@ public class UpdateAccountCommand implements JsonRpcLocalCommand {
     @Override
     public void attachToSubparser(final Subparser subparser) {
         subparser.help("Update the account attributes on the signal server.");
+        subparser.addArgument("-n", "--device-name").help("Specify a name to describe this device.");
     }
 
     @Override
     public void handleCommand(
             final Namespace ns, final Manager m, final OutputWriter outputWriter
     ) throws CommandException {
+        var deviceName = ns.getString("device-name");
         try {
-            m.updateAccountAttributes();
+            m.updateAccountAttributes(deviceName);
         } catch (IOException e) {
             throw new IOErrorException("UpdateAccount error: " + e.getMessage());
         }