Update libsignal-service-java

2025-08-29 10:30:38 +00:00 · 2021-05-13 17:15:14 +02:00 · 2021-05-13 17:15:14 +02:00 · 06e9f8ba64
commit 06e9f8ba64
parent c1d3a647a2
10 changed files with 89 additions and 51 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@ -3,6 +3,8 @@
 ## [Unreleased]

 ## [0.8.3] - 2021-05-13
+**Attention**: Now requires native libsignal-client version 0.5.1
+
 ### Fixed
 - Upgrading from account files with older profiles
 - Building native image with graalvm
--- a/graalvm-config-dir/jni-config.json
+++ b/graalvm-config-dir/jni-config.json
@ -56,13 +56,23 @@
  "name":"org.whispersystems.libsignal.UntrustedIdentityException",
  "methods":[{"name":"<init>","parameterTypes":["java.lang.String"] }]
 },
+{
+  "name":"org.whispersystems.libsignal.logging.Log",
+  "methods":[{"name":"log","parameterTypes":["int","java.lang.String","java.lang.String"] }]
+},
 {
  "name":"org.whispersystems.libsignal.protocol.PreKeySignalMessage",
-  "methods":[{"name":"<init>","parameterTypes":["long"] }]
+  "methods":[
+    {"name":"<init>","parameterTypes":["long"] }, 
+    {"name":"nativeHandle","parameterTypes":[] }
+  ]
 },
 {
  "name":"org.whispersystems.libsignal.protocol.SignalMessage",
-  "methods":[{"name":"<init>","parameterTypes":["long"] }]
+  "methods":[
+    {"name":"<init>","parameterTypes":["long"] }, 
+    {"name":"nativeHandle","parameterTypes":[] }
+  ]
 },
 {
  "name":"org.whispersystems.libsignal.state.IdentityKeyStore"
--- a/graalvm-config-dir/reflect-config.json
+++ b/graalvm-config-dir/reflect-config.json
@ -1013,6 +1013,7 @@
  "fields":[
    {"name":"accessControl_", "allowUnsafeAccess":true}, 
    {"name":"avatar_", "allowUnsafeAccess":true}, 
+    {"name":"description_", "allowUnsafeAccess":true}, 
    {"name":"disappearingMessagesTimer_", "allowUnsafeAccess":true}, 
    {"name":"inviteLinkPassword_", "allowUnsafeAccess":true}, 
    {"name":"members_", "allowUnsafeAccess":true}, 
@ -1050,6 +1051,7 @@
    {"name":"modifyAddFromInviteLinkAccess_", "allowUnsafeAccess":true}, 
    {"name":"modifyAttributesAccess_", "allowUnsafeAccess":true}, 
    {"name":"modifyAvatar_", "allowUnsafeAccess":true}, 
+    {"name":"modifyDescription_", "allowUnsafeAccess":true}, 
    {"name":"modifyDisappearingMessagesTimer_", "allowUnsafeAccess":true}, 
    {"name":"modifyInviteLinkPassword_", "allowUnsafeAccess":true}, 
    {"name":"modifyMemberAccess_", "allowUnsafeAccess":true}, 
@ -1147,6 +1149,7 @@
  "fields":[
    {"name":"accessControl_", "allowUnsafeAccess":true}, 
    {"name":"avatar_", "allowUnsafeAccess":true}, 
+    {"name":"description_", "allowUnsafeAccess":true}, 
    {"name":"disappearingMessagesTimer_", "allowUnsafeAccess":true}, 
    {"name":"inviteLinkPassword_", "allowUnsafeAccess":true}, 
    {"name":"members_", "allowUnsafeAccess":true}, 
@ -1167,6 +1170,7 @@
    {"name":"modifyMemberRoles_", "allowUnsafeAccess":true}, 
    {"name":"newAttributeAccess_", "allowUnsafeAccess":true}, 
    {"name":"newAvatar_", "allowUnsafeAccess":true}, 
+    {"name":"newDescription_", "allowUnsafeAccess":true}, 
    {"name":"newInviteLinkAccess_", "allowUnsafeAccess":true}, 
    {"name":"newInviteLinkPassword_", "allowUnsafeAccess":true}, 
    {"name":"newMemberAccess_", "allowUnsafeAccess":true}, 
@ -1759,6 +1763,7 @@
    {"name":"groupV2_", "allowUnsafeAccess":true}, 
    {"name":"group_", "allowUnsafeAccess":true}, 
    {"name":"isViewOnce_", "allowUnsafeAccess":true}, 
+    {"name":"payment_", "allowUnsafeAccess":true}, 
    {"name":"preview_", "allowUnsafeAccess":true}, 
    {"name":"profileKey_", "allowUnsafeAccess":true}, 
    {"name":"quote_", "allowUnsafeAccess":true}, 
@ -1952,13 +1957,15 @@
    {"name":"groups_", "allowUnsafeAccess":true}, 
    {"name":"keys_", "allowUnsafeAccess":true}, 
    {"name":"messageRequestResponse_", "allowUnsafeAccess":true}, 
+    {"name":"outgoingPayment_", "allowUnsafeAccess":true}, 
    {"name":"padding_", "allowUnsafeAccess":true}, 
    {"name":"read_", "allowUnsafeAccess":true}, 
    {"name":"request_", "allowUnsafeAccess":true}, 
    {"name":"sent_", "allowUnsafeAccess":true}, 
    {"name":"stickerPackOperation_", "allowUnsafeAccess":true}, 
    {"name":"verified_", "allowUnsafeAccess":true}, 
-    {"name":"viewOnceOpen_", "allowUnsafeAccess":true}
+    {"name":"viewOnceOpen_", "allowUnsafeAccess":true}, 
+    {"name":"viewed_", "allowUnsafeAccess":true}
  ]
 },
 {
@ -2038,6 +2045,15 @@
    {"name":"type_", "allowUnsafeAccess":true}
  ]
 },
+{
+  "name":"org.whispersystems.signalservice.internal.push.SignalServiceProtos$SyncMessage$Viewed",
+  "fields":[
+    {"name":"bitField0_", "allowUnsafeAccess":true}, 
+    {"name":"senderE164_", "allowUnsafeAccess":true}, 
+    {"name":"senderUuid_", "allowUnsafeAccess":true}, 
+    {"name":"timestamp_", "allowUnsafeAccess":true}
+  ]
+},
 {
  "name":"org.whispersystems.signalservice.internal.push.SignalServiceProtos$TypingMessage",
  "fields":[
--- a/lib/build.gradle.kts
+++ b/lib/build.gradle.kts
@ -14,7 +14,7 @@ repositories {
 }

 dependencies {
-    api("com.github.turasa:signal-service-java:2.15.3_unofficial_21")
+    api("com.github.turasa:signal-service-java:2.15.3_unofficial_22")
    implementation("com.google.protobuf:protobuf-javalite:3.10.0")
    implementation("org.bouncycastle:bcprov-jdk15on:1.68")
    implementation("org.slf4j:slf4j-api:1.7.30")
--- a/lib/src/main/java/org/asamk/signal/manager/Manager.java
+++ b/lib/src/main/java/org/asamk/signal/manager/Manager.java
@ -83,6 +83,7 @@ import org.whispersystems.signalservice.api.SignalServiceAccountManager;
 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
+import org.whispersystems.signalservice.api.SignalSessionLock;
 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
 import org.whispersystems.signalservice.api.groupsv2.ClientZkOperations;
@ -161,6 +162,7 @@ import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
+import java.util.concurrent.locks.ReentrantLock;
 import java.util.function.Function;
 import java.util.stream.Collectors;

@ -193,6 +195,15 @@ public class Manager implements Closeable {
    private final PinHelper pinHelper;
    private final AvatarStore avatarStore;
    private final AttachmentStore attachmentStore;
+    private final SignalSessionLock sessionLock = new SignalSessionLock() {
+        private final ReentrantLock LEGACY_LOCK = new ReentrantLock();
+
+        @Override
+        public Lock acquire() {
+            LEGACY_LOCK.lock();
+            return LEGACY_LOCK::unlock;
+        }
+    };

    Manager(
            SignalAccount account,
@ -389,6 +400,7 @@ public class Manager implements Closeable {
                    newProfile.getInternalServiceName(),
                    newProfile.getAbout() == null ? "" : newProfile.getAbout(),
                    newProfile.getAboutEmoji() == null ? "" : newProfile.getAboutEmoji(),
+                    Optional.absent(),
                    streamDetails);
        }

@ -534,6 +546,7 @@ public class Manager implements Closeable {
                account.getPassword(),
                account.getDeviceId(),
                account.getSignalProtocolStore(),
+                sessionLock,
                userAgent,
                account.isMultiDevice(),
                Optional.fromNullable(messagePipe),
@ -1511,18 +1524,12 @@ public class Manager implements Closeable {
        }
    }

-    private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
+    private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, ProtocolUntrustedIdentityException {
        var cipher = new SignalServiceCipher(account.getSelfAddress(),
                account.getSignalProtocolStore(),
+                sessionLock,
                certificateValidator);
-        try {
-            return cipher.decrypt(envelope);
-        } catch (ProtocolUntrustedIdentityException e) {
-            if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
-                throw (org.whispersystems.libsignal.UntrustedIdentityException) e.getCause();
-            }
-            throw new AssertionError(e);
-        }
+        return cipher.decrypt(envelope);
    }

    private void handleEndSession(RecipientId recipientId) {
@ -1766,9 +1773,9 @@ public class Manager implements Closeable {
        if (!envelope.isReceipt()) {
            try {
                content = decryptMessage(envelope);
-            } catch (org.whispersystems.libsignal.UntrustedIdentityException e) {
+            } catch (ProtocolUntrustedIdentityException e) {
                if (!envelope.hasSource()) {
-                    final var identifier = ((org.whispersystems.libsignal.UntrustedIdentityException) e).getName();
+                    final var identifier = e.getSender();
                    final var recipientId = resolveRecipient(identifier);
                    try {
                        account.getMessageCache().replaceSender(cachedMessage, recipientId);
@ -1889,8 +1896,8 @@ public class Manager implements Closeable {
                handler.handleMessage(envelope, content, exception);
            }
            if (cachedMessage[0] != null) {
-                if (exception instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
-                    final var identifier = ((org.whispersystems.libsignal.UntrustedIdentityException) exception).getName();
+                if (exception instanceof ProtocolUntrustedIdentityException) {
+                    final var identifier = ((ProtocolUntrustedIdentityException) exception).getSender();
                    final var recipientId = resolveRecipient(identifier);
                    queuedActions.add(new RetrieveProfileAction(recipientId));
                    if (!envelope.hasSource()) {
--- a/lib/src/main/java/org/asamk/signal/manager/config/ServiceConfig.java
+++ b/lib/src/main/java/org/asamk/signal/manager/config/ServiceConfig.java
@ -51,7 +51,7 @@ public class ServiceConfig {

    public static boolean isSignalClientAvailable() {
        try {
-            org.signal.client.internal.Native.DisplayableFingerprint_Format(new byte[30], new byte[30]);
+            org.signal.client.internal.Native.DeviceTransfer_GeneratePrivateKey();
            return true;
        } catch (UnsatisfiedLinkError ignored) {
            return false;
--- a/lib/src/main/java/org/asamk/signal/manager/storage/protocol/SignalProtocolStore.java
+++ b/lib/src/main/java/org/asamk/signal/manager/storage/protocol/SignalProtocolStore.java
@ -4,6 +4,7 @@ import org.whispersystems.libsignal.IdentityKey;
 import org.whispersystems.libsignal.IdentityKeyPair;
 import org.whispersystems.libsignal.InvalidKeyIdException;
 import org.whispersystems.libsignal.SignalProtocolAddress;
+import org.whispersystems.libsignal.groups.state.SenderKeyRecord;
 import org.whispersystems.libsignal.state.IdentityKeyStore;
 import org.whispersystems.libsignal.state.PreKeyRecord;
 import org.whispersystems.libsignal.state.PreKeyStore;
@ -14,6 +15,7 @@ import org.whispersystems.signalservice.api.SignalServiceProtocolStore;
 import org.whispersystems.signalservice.api.SignalServiceSessionStore;

 import java.util.List;
+import java.util.UUID;

 public class SignalProtocolStore implements SignalServiceProtocolStore {

@ -138,4 +140,15 @@ public class SignalProtocolStore implements SignalServiceProtocolStore {
    public void removeSignedPreKey(int signedPreKeyId) {
        signedPreKeyStore.removeSignedPreKey(signedPreKeyId);
    }
+
+    @Override
+    public void storeSenderKey(
+            final SignalProtocolAddress sender, final UUID distributionId, final SenderKeyRecord record
+    ) {
+    }
+
+    @Override
+    public SenderKeyRecord loadSenderKey(final SignalProtocolAddress sender, final UUID distributionId) {
+        return null;
+    }
 }
--- a/lib/src/main/java/org/asamk/signal/manager/util/AttachmentUtils.java
+++ b/lib/src/main/java/org/asamk/signal/manager/util/AttachmentUtils.java
@ -49,6 +49,7 @@ public class AttachmentUtils {
                name,
                false,
                false,
+                false,
                preview,
                0,
                0,
--- a/lib/src/main/java/org/asamk/signal/manager/util/ProfileUtils.java
+++ b/lib/src/main/java/org/asamk/signal/manager/util/ProfileUtils.java
@ -18,9 +18,9 @@ public class ProfileUtils {
    ) {
        var profileCipher = new ProfileCipher(profileKey);
        try {
-            var name = decryptName(encryptedProfile.getName(), profileCipher);
-            var about = decryptName(encryptedProfile.getAbout(), profileCipher);
-            var aboutEmoji = decryptName(encryptedProfile.getAboutEmoji(), profileCipher);
+            var name = decrypt(encryptedProfile.getName(), profileCipher);
+            var about = decrypt(encryptedProfile.getAbout(), profileCipher);
+            var aboutEmoji = decrypt(encryptedProfile.getAboutEmoji(), profileCipher);

            final var nameParts = splitName(name);
            return new Profile(new Date().getTime(),
@ -66,13 +66,13 @@ public class ProfileUtils {
        return capabilities;
    }

-    private static String decryptName(
+    private static String decrypt(
            final String encryptedName, final ProfileCipher profileCipher
    ) throws InvalidCiphertextException {
        try {
            return encryptedName == null
                    ? null
-                    : new String(profileCipher.decryptName(Base64.getDecoder().decode(encryptedName)));
+                    : new String(profileCipher.decrypt(Base64.getDecoder().decode(encryptedName)));
        } catch (IllegalArgumentException e) {
            return null;
        }
--- a/src/main/java/org/asamk/signal/ReceiveMessageHandler.java
+++ b/src/main/java/org/asamk/signal/ReceiveMessageHandler.java
@ -5,8 +5,8 @@ import org.asamk.signal.manager.groups.GroupId;
 import org.asamk.signal.manager.groups.GroupUtils;
 import org.asamk.signal.util.DateUtils;
 import org.asamk.signal.util.Util;
+import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
 import org.slf4j.helpers.MessageFormatter;
-import org.whispersystems.libsignal.UntrustedIdentityException;
 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
@ -20,7 +20,6 @@ import org.whispersystems.signalservice.api.messages.shared.SharedContact;
 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
 import org.whispersystems.signalservice.api.util.InvalidNumberException;

-import java.io.IOException;
 import java.util.Base64;
 import java.util.stream.Collectors;

@ -34,16 +33,6 @@ public class ReceiveMessageHandler implements Manager.ReceiveMessageHandler {

    @Override
    public void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, Throwable exception) {
-        try {
-            printMessage(envelope, content, exception);
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-    }
-
-    private void printMessage(
-            SignalServiceEnvelope envelope, SignalServiceContent content, Throwable exception
-    ) throws IOException {
        PlainTextWriter writer = new PlainTextWriterImpl(System.out);

        if (envelope.hasSource()) {
@ -64,11 +53,11 @@ public class ReceiveMessageHandler implements Manager.ReceiveMessageHandler {
            writer.println("Got receipt.");
        } else if (envelope.isSignalMessage() || envelope.isPreKeySignalMessage() || envelope.isUnidentifiedSender()) {
            if (exception != null) {
-                if (exception instanceof UntrustedIdentityException) {
-                    var e = (UntrustedIdentityException) exception;
+                if (exception instanceof ProtocolUntrustedIdentityException) {
+                    var e = (ProtocolUntrustedIdentityException) exception;
                    writer.println(
                            "The user’s key is untrusted, either the user has reinstalled Signal or a third party sent this message.");
-                    final var recipientName = m.resolveSignalServiceAddress(e.getName()).getLegacyIdentifier();
+                    final var recipientName = m.resolveSignalServiceAddress(e.getSender()).getLegacyIdentifier();
                    writer.println(
                            "Use 'signal-cli -u {} listIdentities -n {}', verify the key and run 'signal-cli -u {} trust -v \"FINGER_PRINT\" {}' to mark it as trusted",
                            m.getUsername(),
@ -127,7 +116,7 @@ public class ReceiveMessageHandler implements Manager.ReceiveMessageHandler {

    private void printDataMessage(
            PlainTextWriter writer, SignalServiceDataMessage message
-    ) throws IOException {
+    ) {
        writer.println("Message timestamp: {}", DateUtils.formatTimestamp(message.getTimestamp()));
        if (message.isViewOnce()) {
            writer.println("=VIEW ONCE=");
@ -210,7 +199,7 @@ public class ReceiveMessageHandler implements Manager.ReceiveMessageHandler {

    private void printTypingMessage(
            final PlainTextWriter writer, final SignalServiceTypingMessage typingMessage
-    ) throws IOException {
+    ) {
        writer.println("Action: {}", typingMessage.getAction());
        writer.println("Timestamp: {}", DateUtils.formatTimestamp(typingMessage.getTimestamp()));
        if (typingMessage.getGroupId().isPresent()) {
@ -222,7 +211,7 @@ public class ReceiveMessageHandler implements Manager.ReceiveMessageHandler {

    private void printReceiptMessage(
            final PlainTextWriter writer, final SignalServiceReceiptMessage receiptMessage
-    ) throws IOException {
+    ) {
        writer.println("When: {}", DateUtils.formatTimestamp(receiptMessage.getWhen()));
        if (receiptMessage.isDeliveryReceipt()) {
            writer.println("Is delivery receipt");
@ -241,7 +230,7 @@ public class ReceiveMessageHandler implements Manager.ReceiveMessageHandler {

    private void printCallMessage(
            final PlainTextWriter writer, final SignalServiceCallMessage callMessage
-    ) throws IOException {
+    ) {
        if (callMessage.getDestinationDeviceId().isPresent()) {
            final var deviceId = callMessage.getDestinationDeviceId().get();
            writer.println("Destination device id: {}", deviceId);
@ -277,7 +266,7 @@ public class ReceiveMessageHandler implements Manager.ReceiveMessageHandler {

    private void printSyncMessage(
            final PlainTextWriter writer, final SignalServiceSyncMessage syncMessage
-    ) throws IOException {
+    ) {
        if (syncMessage.getContacts().isPresent()) {
            final var contactsMessage = syncMessage.getContacts().get();
            var type = contactsMessage.isComplete() ? "complete" : "partial";
@ -425,7 +414,7 @@ public class ReceiveMessageHandler implements Manager.ReceiveMessageHandler {

    private void printPreview(
            final PlainTextWriter writer, final SignalServiceDataMessage.Preview preview
-    ) throws IOException {
+    ) {
        writer.println("Title: {}", preview.getTitle());
        writer.println("Description: {}", preview.getDescription());
        writer.println("Date: {}", DateUtils.formatTimestamp(preview.getDate()));
@ -438,7 +427,7 @@ public class ReceiveMessageHandler implements Manager.ReceiveMessageHandler {

    private void printSticker(
            final PlainTextWriter writer, final SignalServiceDataMessage.Sticker sticker
-    ) throws IOException {
+    ) {
        writer.println("Pack id: {}", Base64.getEncoder().encodeToString(sticker.getPackId()));
        writer.println("Pack key: {}", Base64.getEncoder().encodeToString(sticker.getPackKey()));
        writer.println("Sticker id: {}", sticker.getStickerId());
@ -448,7 +437,7 @@ public class ReceiveMessageHandler implements Manager.ReceiveMessageHandler {

    private void printReaction(
            final PlainTextWriter writer, final SignalServiceDataMessage.Reaction reaction
-    ) throws IOException {
+    ) {
        writer.println("Emoji: {}", reaction.getEmoji());
        writer.println("Target author: {}", formatContact(m.resolveSignalServiceAddress(reaction.getTargetAuthor())));
        writer.println("Target timestamp: {}", DateUtils.formatTimestamp(reaction.getTargetSentTimestamp()));
@ -457,7 +446,7 @@ public class ReceiveMessageHandler implements Manager.ReceiveMessageHandler {

    private void printQuote(
            final PlainTextWriter writer, final SignalServiceDataMessage.Quote quote
-    ) throws IOException {
+    ) {
        writer.println("Id: {}", quote.getId());
        writer.println("Author: {}", m.resolveSignalServiceAddress(quote.getAuthor()).getLegacyIdentifier());
        writer.println("Text: {}", quote.getText());
@ -482,7 +471,7 @@ public class ReceiveMessageHandler implements Manager.ReceiveMessageHandler {
        }
    }

-    private void printSharedContact(final PlainTextWriter writer, final SharedContact contact) throws IOException {
+    private void printSharedContact(final PlainTextWriter writer, final SharedContact contact) {
        writer.println("Name:");
        var name = contact.getName();
        writer.indent(w -> {
@ -591,7 +580,7 @@ public class ReceiveMessageHandler implements Manager.ReceiveMessageHandler {

    private void printGroupContext(
            final PlainTextWriter writer, final SignalServiceGroupContext groupContext
-    ) throws IOException {
+    ) {
        final var groupId = GroupUtils.getGroupId(groupContext);
        if (groupContext.getGroupV1().isPresent()) {
            var groupInfo = groupContext.getGroupV1().get();
@ -616,7 +605,7 @@ public class ReceiveMessageHandler implements Manager.ReceiveMessageHandler {
        }
    }

-    private void printGroupInfo(final PlainTextWriter writer, final GroupId groupId) throws IOException {
+    private void printGroupInfo(final PlainTextWriter writer, final GroupId groupId) {
        writer.println("Id: {}", groupId.toBase64());

        var group = m.getGroup(groupId);
@ -629,7 +618,7 @@ public class ReceiveMessageHandler implements Manager.ReceiveMessageHandler {

    private void printMention(
            PlainTextWriter writer, SignalServiceDataMessage.Mention mention
-    ) throws IOException {
+    ) {
        final var address = m.resolveSignalServiceAddress(new SignalServiceAddress(mention.getUuid(), null));
        writer.println("- {}: {} (length: {})", formatContact(address), mention.getStart(), mention.getLength());
    }