]> nmode's Git Repositories - signal-cli/blobdiff - lib/src/main/java/org/asamk/signal/manager/Manager.java
Extend json output with number and uuid fields
[signal-cli] / lib / src / main / java / org / asamk / signal / manager / Manager.java
index 37b4aa860e6ead15b1562923bc9ca323acf76276..8aa7ed18574539de30e60624320a9884b0c15103 100644 (file)
@@ -33,6 +33,7 @@ import org.asamk.signal.manager.groups.NotAGroupMemberException;
 import org.asamk.signal.manager.helper.GroupV2Helper;
 import org.asamk.signal.manager.helper.PinHelper;
 import org.asamk.signal.manager.helper.ProfileHelper;
+import org.asamk.signal.manager.helper.SendHelper;
 import org.asamk.signal.manager.helper.UnidentifiedAccessHelper;
 import org.asamk.signal.manager.jobs.Context;
 import org.asamk.signal.manager.jobs.Job;
@@ -65,14 +66,12 @@ import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
 import org.signal.libsignal.metadata.ProtocolNoSessionException;
 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
 import org.signal.libsignal.metadata.SelfSendException;
-import org.signal.libsignal.metadata.certificate.CertificateValidator;
 import org.signal.storageservice.protos.groups.GroupChange;
 import org.signal.storageservice.protos.groups.local.DecryptedGroup;
 import org.signal.zkgroup.InvalidInputException;
 import org.signal.zkgroup.VerificationFailedException;
 import org.signal.zkgroup.groups.GroupMasterKey;
 import org.signal.zkgroup.groups.GroupSecretParams;
-import org.signal.zkgroup.profiles.ClientZkProfileOperations;
 import org.signal.zkgroup.profiles.ProfileKey;
 import org.signal.zkgroup.profiles.ProfileKeyCredential;
 import org.slf4j.Logger;
@@ -86,19 +85,11 @@ import org.whispersystems.libsignal.state.PreKeyRecord;
 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
 import org.whispersystems.libsignal.util.Pair;
 import org.whispersystems.libsignal.util.guava.Optional;
-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.InvalidMessageStructureException;
 import org.whispersystems.signalservice.api.SignalSessionLock;
-import org.whispersystems.signalservice.api.crypto.ContentHint;
-import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
-import org.whispersystems.signalservice.api.groupsv2.ClientZkOperations;
 import org.whispersystems.signalservice.api.groupsv2.GroupLinkNotActiveException;
-import org.whispersystems.signalservice.api.groupsv2.GroupsV2Api;
 import org.whispersystems.signalservice.api.groupsv2.GroupsV2AuthorizationString;
-import org.whispersystems.signalservice.api.groupsv2.GroupsV2Operations;
 import org.whispersystems.signalservice.api.messages.SendMessageResult;
 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
@@ -120,7 +111,6 @@ import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
-import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
 import org.whispersystems.signalservice.api.messages.multidevice.StickerPackOperationMessage;
 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
@@ -129,13 +119,11 @@ import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
 import org.whispersystems.signalservice.api.push.exceptions.ConflictException;
 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
-import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
 import org.whispersystems.signalservice.api.util.DeviceNameUtil;
 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 import org.whispersystems.signalservice.api.util.PhoneNumberFormatter;
-import org.whispersystems.signalservice.api.util.SleepTimer;
-import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 import org.whispersystems.signalservice.api.util.UuidUtil;
+import org.whispersystems.signalservice.api.websocket.WebSocketUnavailableException;
 import org.whispersystems.signalservice.internal.contacts.crypto.Quote;
 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedQuoteException;
 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedResponseException;
@@ -182,27 +170,18 @@ public class Manager implements Closeable {
 
     private final static Logger logger = LoggerFactory.getLogger(Manager.class);
 
-    private final CertificateValidator certificateValidator;
-
     private final ServiceEnvironmentConfig serviceEnvironmentConfig;
-    private final String userAgent;
+    private final SignalDependencies dependencies;
 
     private SignalAccount account;
-    private final SignalServiceAccountManager accountManager;
-    private final GroupsV2Api groupsV2Api;
-    private final GroupsV2Operations groupsV2Operations;
-    private final SignalServiceMessageReceiver messageReceiver;
-    private final ClientZkProfileOperations clientZkProfileOperations;
 
     private final ExecutorService executor = Executors.newCachedThreadPool();
 
-    private SignalServiceMessagePipe messagePipe = null;
-    private SignalServiceMessagePipe unidentifiedMessagePipe = null;
-
-    private final UnidentifiedAccessHelper unidentifiedAccessHelper;
     private final ProfileHelper profileHelper;
     private final GroupV2Helper groupV2Helper;
     private final PinHelper pinHelper;
+    private final SendHelper sendHelper;
+
     private final AvatarStore avatarStore;
     private final AttachmentStore attachmentStore;
     private final StickerPackStore stickerPackStore;
@@ -224,62 +203,47 @@ public class Manager implements Closeable {
     ) {
         this.account = account;
         this.serviceEnvironmentConfig = serviceEnvironmentConfig;
-        this.certificateValidator = new CertificateValidator(serviceEnvironmentConfig.getUnidentifiedSenderTrustRoot());
-        this.userAgent = userAgent;
-        this.groupsV2Operations = capabilities.isGv2() ? new GroupsV2Operations(ClientZkOperations.create(
-                serviceEnvironmentConfig.getSignalServiceConfiguration())) : null;
-        final SleepTimer timer = new UptimeSleepTimer();
-        this.accountManager = new SignalServiceAccountManager(serviceEnvironmentConfig.getSignalServiceConfiguration(),
-                new DynamicCredentialsProvider(account.getUuid(),
-                        account.getUsername(),
-                        account.getPassword(),
-                        account.getDeviceId()),
-                userAgent,
-                groupsV2Operations,
-                ServiceConfig.AUTOMATIC_NETWORK_RETRY,
-                timer);
-        this.groupsV2Api = accountManager.getGroupsV2Api();
-        final var keyBackupService = accountManager.getKeyBackupService(ServiceConfig.getIasKeyStore(),
-                serviceEnvironmentConfig.getKeyBackupConfig().getEnclaveName(),
-                serviceEnvironmentConfig.getKeyBackupConfig().getServiceId(),
-                serviceEnvironmentConfig.getKeyBackupConfig().getMrenclave(),
-                10);
-
-        this.pinHelper = new PinHelper(keyBackupService);
-        this.clientZkProfileOperations = capabilities.isGv2()
-                ? ClientZkOperations.create(serviceEnvironmentConfig.getSignalServiceConfiguration())
-                .getProfileOperations()
-                : null;
-        this.messageReceiver = new SignalServiceMessageReceiver(serviceEnvironmentConfig.getSignalServiceConfiguration(),
-                account.getUuid(),
+
+        final var credentialsProvider = new DynamicCredentialsProvider(account.getUuid(),
                 account.getUsername(),
                 account.getPassword(),
-                account.getDeviceId(),
+                account.getDeviceId());
+        this.dependencies = new SignalDependencies(account.getSelfAddress(),
+                serviceEnvironmentConfig,
                 userAgent,
-                null,
-                timer,
-                clientZkProfileOperations,
-                ServiceConfig.AUTOMATIC_NETWORK_RETRY);
+                credentialsProvider,
+                account.getSignalProtocolStore(),
+                executor,
+                sessionLock);
+        this.pinHelper = new PinHelper(dependencies.getKeyBackupService());
 
-        this.unidentifiedAccessHelper = new UnidentifiedAccessHelper(account::getProfileKey,
+        final var unidentifiedAccessHelper = new UnidentifiedAccessHelper(account::getProfileKey,
                 account.getProfileStore()::getProfileKey,
                 this::getRecipientProfile,
                 this::getSenderCertificate);
         this.profileHelper = new ProfileHelper(account.getProfileStore()::getProfileKey,
                 unidentifiedAccessHelper::getAccessFor,
-                unidentified -> unidentified ? getOrCreateUnidentifiedMessagePipe() : getOrCreateMessagePipe(),
-                () -> messageReceiver,
+                dependencies::getProfileService,
+                dependencies::getMessageReceiver,
                 this::resolveSignalServiceAddress);
         this.groupV2Helper = new GroupV2Helper(this::getRecipientProfileKeyCredential,
                 this::getRecipientProfile,
                 account::getSelfRecipientId,
-                groupsV2Operations,
-                groupsV2Api,
+                dependencies.getGroupsV2Operations(),
+                dependencies.getGroupsV2Api(),
                 this::getGroupAuthForToday,
                 this::resolveSignalServiceAddress);
         this.avatarStore = new AvatarStore(pathConfig.getAvatarsPath());
         this.attachmentStore = new AttachmentStore(pathConfig.getAttachmentsPath());
         this.stickerPackStore = new StickerPackStore(pathConfig.getStickerPacksPath());
+        this.sendHelper = new SendHelper(account,
+                dependencies,
+                unidentifiedAccessHelper,
+                this::resolveSignalServiceAddress,
+                this::resolveRecipient,
+                this::handleIdentityFailure,
+                this::getGroup,
+                this::refreshRegisteredUser);
     }
 
     public String getUsername() {
@@ -350,11 +314,11 @@ public class Manager implements Closeable {
                         days);
             }
         }
-        if (accountManager.getPreKeysCount() < ServiceConfig.PREKEY_MINIMUM_COUNT) {
+        if (dependencies.getAccountManager().getPreKeysCount() < ServiceConfig.PREKEY_MINIMUM_COUNT) {
             refreshPreKeys();
         }
         if (account.getUuid() == null) {
-            account.setUuid(accountManager.getOwnUuid());
+            account.setUuid(dependencies.getAccountManager().getOwnUuid());
         }
         updateAccountAttributes();
     }
@@ -363,30 +327,47 @@ public class Manager implements Closeable {
      * This is used for checking a set of phone numbers for registration on Signal
      *
      * @param numbers The set of phone number in question
-     * @return A map of numbers to booleans. True if registered, false otherwise. Should never be null
+     * @return A map of numbers to canonicalized number and uuid. If a number is not registered the uuid is null.
      * @throws IOException if its unable to get the contacts to check if they're registered
      */
-    public Map<String, Boolean> areUsersRegistered(Set<String> numbers) throws IOException {
+    public Map<String, Pair<String, UUID>> areUsersRegistered(Set<String> numbers) throws IOException {
+        Map<String, String> canonicalizedNumbers = numbers.stream().collect(Collectors.toMap(n -> n, n -> {
+            try {
+                return canonicalizePhoneNumber(n);
+            } catch (InvalidNumberException e) {
+                return "";
+            }
+        }));
+
         // Note "contactDetails" has no optionals. It only gives us info on users who are registered
-        var contactDetails = getRegisteredUsers(numbers);
+        var contactDetails = getRegisteredUsers(canonicalizedNumbers.values()
+                .stream()
+                .filter(s -> !s.isEmpty())
+                .collect(Collectors.toSet()));
 
-        var registeredUsers = contactDetails.keySet();
+        // Store numbers as recipients so we have the number/uuid association
+        contactDetails.forEach((number, uuid) -> resolveRecipientTrusted(new SignalServiceAddress(uuid, number)));
 
-        return numbers.stream().collect(Collectors.toMap(x -> x, registeredUsers::contains));
+        return numbers.stream().collect(Collectors.toMap(n -> n, n -> {
+            final var number = canonicalizedNumbers.get(n);
+            final var uuid = contactDetails.get(number);
+            return new Pair<>(number.isEmpty() ? null : number, uuid);
+        }));
     }
 
     public void updateAccountAttributes() throws IOException {
-        accountManager.setAccountAttributes(account.getEncryptedDeviceName(),
-                null,
-                account.getLocalRegistrationId(),
-                true,
-                // set legacy pin only if no KBS master key is set
-                account.getPinMasterKey() == null ? account.getRegistrationLockPin() : null,
-                account.getPinMasterKey() == null ? null : account.getPinMasterKey().deriveRegistrationLock(),
-                account.getSelfUnidentifiedAccessKey(),
-                account.isUnrestrictedUnidentifiedAccess(),
-                capabilities,
-                account.isDiscoverableByPhoneNumber());
+        dependencies.getAccountManager()
+                .setAccountAttributes(account.getEncryptedDeviceName(),
+                        null,
+                        account.getLocalRegistrationId(),
+                        true,
+                        // set legacy pin only if no KBS master key is set
+                        account.getPinMasterKey() == null ? account.getRegistrationLockPin() : null,
+                        account.getPinMasterKey() == null ? null : account.getPinMasterKey().deriveRegistrationLock(),
+                        account.getSelfUnidentifiedAccessKey(),
+                        account.isUnrestrictedUnidentifiedAccess(),
+                        capabilities,
+                        account.isDiscoverableByPhoneNumber());
     }
 
     /**
@@ -418,13 +399,14 @@ public class Manager implements Closeable {
         try (final var streamDetails = avatar == null
                 ? avatarStore.retrieveProfileAvatar(getSelfAddress())
                 : avatar.isPresent() ? Utils.createStreamDetailsFromFile(avatar.get()) : null) {
-            accountManager.setVersionedProfile(account.getUuid(),
-                    account.getProfileKey(),
-                    newProfile.getInternalServiceName(),
-                    newProfile.getAbout() == null ? "" : newProfile.getAbout(),
-                    newProfile.getAboutEmoji() == null ? "" : newProfile.getAboutEmoji(),
-                    Optional.absent(),
-                    streamDetails);
+            dependencies.getAccountManager()
+                    .setVersionedProfile(account.getUuid(),
+                            account.getProfileKey(),
+                            newProfile.getInternalServiceName(),
+                            newProfile.getAbout() == null ? "" : newProfile.getAbout(),
+                            newProfile.getAboutEmoji() == null ? "" : newProfile.getAboutEmoji(),
+                            Optional.absent(),
+                            streamDetails);
         }
 
         if (avatar != null) {
@@ -437,29 +419,26 @@ public class Manager implements Closeable {
         }
         account.getProfileStore().storeProfile(account.getSelfRecipientId(), newProfile);
 
-        try {
-            sendSyncMessage(SignalServiceSyncMessage.forFetchLatest(SignalServiceSyncMessage.FetchType.LOCAL_PROFILE));
-        } catch (UntrustedIdentityException ignored) {
-        }
+        sendHelper.sendSyncMessage(SignalServiceSyncMessage.forFetchLatest(SignalServiceSyncMessage.FetchType.LOCAL_PROFILE));
     }
 
     public void unregister() throws IOException {
         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
         // If this is the master device, other users can't send messages to this number anymore.
         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
-        accountManager.setGcmId(Optional.absent());
+        dependencies.getAccountManager().setGcmId(Optional.absent());
 
         account.setRegistered(false);
     }
 
     public void deleteAccount() throws IOException {
-        accountManager.deleteAccount();
+        dependencies.getAccountManager().deleteAccount();
 
         account.setRegistered(false);
     }
 
     public List<Device> getLinkedDevices() throws IOException {
-        var devices = accountManager.getDevices();
+        var devices = dependencies.getAccountManager().getDevices();
         account.setMultiDevice(devices.size() > 1);
         var identityKey = account.getIdentityKeyPair().getPrivateKey();
         return devices.stream().map(d -> {
@@ -476,8 +455,8 @@ public class Manager implements Closeable {
     }
 
     public void removeLinkedDevices(int deviceId) throws IOException {
-        accountManager.removeDevice(deviceId);
-        var devices = accountManager.getDevices();
+        dependencies.getAccountManager().removeDevice(deviceId);
+        var devices = dependencies.getAccountManager().getDevices();
         account.setMultiDevice(devices.size() > 1);
     }
 
@@ -489,13 +468,14 @@ public class Manager implements Closeable {
 
     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
         var identityKeyPair = getIdentityKeyPair();
-        var verificationCode = accountManager.getNewDeviceVerificationCode();
-
-        accountManager.addDevice(deviceIdentifier,
-                deviceKey,
-                identityKeyPair,
-                Optional.of(account.getProfileKey().serialize()),
-                verificationCode);
+        var verificationCode = dependencies.getAccountManager().getNewDeviceVerificationCode();
+
+        dependencies.getAccountManager()
+                .addDevice(deviceIdentifier,
+                        deviceKey,
+                        identityKeyPair,
+                        Optional.of(account.getProfileKey().serialize()),
+                        verificationCode);
         account.setMultiDevice(true);
     }
 
@@ -512,9 +492,6 @@ public class Manager implements Closeable {
 
             account.setRegistrationLockPin(pin.get(), masterKey);
         } else {
-            // Remove legacy registration lock
-            accountManager.removeRegistrationLockV1();
-
             // Remove KBS Pin
             pinHelper.removeRegistrationLockPin();
 
@@ -527,7 +504,7 @@ public class Manager implements Closeable {
         final var identityKeyPair = getIdentityKeyPair();
         var signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 
-        accountManager.setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
+        dependencies.getAccountManager().setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
     }
 
     private List<PreKeyRecord> generatePreKeys() {
@@ -548,39 +525,6 @@ public class Manager implements Closeable {
         return record;
     }
 
-    private SignalServiceMessagePipe getOrCreateMessagePipe() {
-        if (messagePipe == null) {
-            messagePipe = messageReceiver.createMessagePipe();
-        }
-        return messagePipe;
-    }
-
-    private SignalServiceMessagePipe getOrCreateUnidentifiedMessagePipe() {
-        if (unidentifiedMessagePipe == null) {
-            unidentifiedMessagePipe = messageReceiver.createUnidentifiedMessagePipe();
-        }
-        return unidentifiedMessagePipe;
-    }
-
-    private SignalServiceMessageSender createMessageSender() {
-        return new SignalServiceMessageSender(serviceEnvironmentConfig.getSignalServiceConfiguration(),
-                account.getUuid(),
-                account.getUsername(),
-                account.getPassword(),
-                account.getDeviceId(),
-                account.getSignalProtocolStore(),
-                sessionLock,
-                userAgent,
-                account.isMultiDevice(),
-                Optional.fromNullable(messagePipe),
-                Optional.fromNullable(unidentifiedMessagePipe),
-                Optional.absent(),
-                clientZkProfileOperations,
-                executor,
-                ServiceConfig.MAX_ENVELOPE_SIZE,
-                ServiceConfig.AUTOMATIC_NETWORK_RETRY);
-    }
-
     public Profile getRecipientProfile(
             RecipientId recipientId
     ) {
@@ -618,21 +562,27 @@ public class Manager implements Closeable {
             return null;
         }
 
+        profile = decryptProfileIfKeyKnown(recipientId, encryptedProfile);
+        account.getProfileStore().storeProfile(recipientId, profile);
+
+        return profile;
+    }
+
+    private Profile decryptProfileIfKeyKnown(
+            final RecipientId recipientId, final SignalServiceProfile encryptedProfile
+    ) {
         var profileKey = account.getProfileStore().getProfileKey(recipientId);
         if (profileKey == null) {
-            profile = new Profile(System.currentTimeMillis(),
+            return new Profile(System.currentTimeMillis(),
                     null,
                     null,
                     null,
                     null,
                     ProfileUtils.getUnidentifiedAccessMode(encryptedProfile, null),
                     ProfileUtils.getCapabilities(encryptedProfile));
-        } else {
-            profile = decryptProfileAndDownloadAvatar(recipientId, profileKey, encryptedProfile);
         }
-        account.getProfileStore().storeProfile(recipientId, profile);
 
-        return profile;
+        return decryptProfileAndDownloadAvatar(recipientId, profileKey, encryptedProfile);
     }
 
     private SignalServiceProfile retrieveEncryptedProfile(RecipientId recipientId) {
@@ -723,17 +673,6 @@ public class Manager implements Closeable {
         return Optional.of(AttachmentUtils.createAttachment(streamDetails, Optional.absent()));
     }
 
-    private GroupInfo getGroupForSending(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
-        var g = getGroup(groupId);
-        if (g == null) {
-            throw new GroupNotFoundException(groupId);
-        }
-        if (!g.isMember(account.getSelfRecipientId())) {
-            throw new NotAGroupMemberException(groupId, g.getTitle());
-        }
-        return g;
-    }
-
     private GroupInfo getGroupForUpdating(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
         var g = getGroup(groupId);
         if (g == null) {
@@ -752,12 +691,12 @@ public class Manager implements Closeable {
     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
             String messageText, List<String> attachments, GroupId groupId
     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
-        final var messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
+        final var messageBuilder = createMessageBuilder().withBody(messageText);
         if (attachments != null) {
             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
         }
 
-        return sendGroupMessage(messageBuilder, groupId);
+        return sendHelper.sendAsGroupMessage(messageBuilder, groupId);
     }
 
     public Pair<Long, List<SendMessageResult>> sendGroupMessageReaction(
@@ -768,20 +707,9 @@ public class Manager implements Closeable {
                 remove,
                 resolveSignalServiceAddress(targetAuthorRecipientId),
                 targetSentTimestamp);
-        final var messageBuilder = SignalServiceDataMessage.newBuilder().withReaction(reaction);
+        final var messageBuilder = createMessageBuilder().withReaction(reaction);
 
-        return sendGroupMessage(messageBuilder, groupId);
-    }
-
-    public Pair<Long, List<SendMessageResult>> sendGroupMessage(
-            SignalServiceDataMessage.Builder messageBuilder, GroupId groupId
-    ) throws IOException, GroupNotFoundException, NotAGroupMemberException {
-        final var g = getGroupForSending(groupId);
-
-        GroupUtils.setGroupContext(messageBuilder, g);
-        messageBuilder.withExpiration(g.getMessageExpirationTime());
-
-        return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfRecipientId()));
+        return sendHelper.sendAsGroupMessage(messageBuilder, groupId);
     }
 
     public Pair<Long, List<SendMessageResult>> sendQuitGroupMessage(
@@ -792,7 +720,7 @@ public class Manager implements Closeable {
             return quitGroupV1((GroupInfoV1) group);
         }
 
-        final var newAdmins = getSignalServiceAddresses(groupAdmins);
+        final var newAdmins = getRecipientIds(groupAdmins);
         try {
             return quitGroupV2((GroupInfoV2) group, newAdmins);
         } catch (ConflictException e) {
@@ -807,10 +735,11 @@ public class Manager implements Closeable {
                 .withId(groupInfoV1.getGroupId().serialize())
                 .build();
 
-        var messageBuilder = SignalServiceDataMessage.newBuilder().asGroupMessage(group);
+        var messageBuilder = createMessageBuilder().asGroupMessage(group);
         groupInfoV1.removeMember(account.getSelfRecipientId());
         account.getGroupStore().updateGroup(groupInfoV1);
-        return sendMessage(messageBuilder, groupInfoV1.getMembersWithout(account.getSelfRecipientId()));
+        return sendHelper.sendGroupMessage(messageBuilder.build(),
+                groupInfoV1.getMembersIncludingPendingWithout(account.getSelfRecipientId()));
     }
 
     private Pair<Long, List<SendMessageResult>> quitGroupV2(
@@ -830,7 +759,8 @@ public class Manager implements Closeable {
         groupInfoV2.setGroup(groupGroupChangePair.first(), this::resolveRecipient);
         var messageBuilder = getGroupUpdateMessageBuilder(groupInfoV2, groupGroupChangePair.second().toByteArray());
         account.getGroupStore().updateGroup(groupInfoV2);
-        return sendMessage(messageBuilder, groupInfoV2.getMembersWithout(account.getSelfRecipientId()));
+        return sendHelper.sendGroupMessage(messageBuilder.build(),
+                groupInfoV2.getMembersIncludingPendingWithout(account.getSelfRecipientId()));
     }
 
     public void deleteGroup(GroupId groupId) throws IOException {
@@ -841,7 +771,7 @@ public class Manager implements Closeable {
     public Pair<GroupId, List<SendMessageResult>> createGroup(
             String name, List<String> members, File avatarFile
     ) throws IOException, AttachmentInvalidException, InvalidNumberException {
-        return createGroup(name, members == null ? null : getSignalServiceAddresses(members), avatarFile);
+        return createGroup(name, members == null ? null : getRecipientIds(members), avatarFile);
     }
 
     private Pair<GroupId, List<SendMessageResult>> createGroup(
@@ -877,7 +807,8 @@ public class Manager implements Closeable {
         messageBuilder = getGroupUpdateMessageBuilder(gv2, null);
         account.getGroupStore().updateGroup(gv2);
 
-        final var result = sendMessage(messageBuilder, gv2.getMembersIncludingPendingWithout(selfRecipientId));
+        final var result = sendHelper.sendGroupMessage(messageBuilder.build(),
+                gv2.getMembersIncludingPendingWithout(selfRecipientId));
         return new Pair<>(gv2.getGroupId(), result.second());
     }
 
@@ -894,21 +825,23 @@ public class Manager implements Closeable {
             GroupPermission addMemberPermission,
             GroupPermission editDetailsPermission,
             File avatarFile,
-            Integer expirationTimer
+            Integer expirationTimer,
+            Boolean isAnnouncementGroup
     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
         return updateGroup(groupId,
                 name,
                 description,
-                members == null ? null : getSignalServiceAddresses(members),
-                removeMembers == null ? null : getSignalServiceAddresses(removeMembers),
-                admins == null ? null : getSignalServiceAddresses(admins),
-                removeAdmins == null ? null : getSignalServiceAddresses(removeAdmins),
+                members == null ? null : getRecipientIds(members),
+                removeMembers == null ? null : getRecipientIds(removeMembers),
+                admins == null ? null : getRecipientIds(admins),
+                removeAdmins == null ? null : getRecipientIds(removeAdmins),
                 resetGroupLink,
                 groupLinkState,
                 addMemberPermission,
                 editDetailsPermission,
                 avatarFile,
-                expirationTimer);
+                expirationTimer,
+                isAnnouncementGroup);
     }
 
     private Pair<Long, List<SendMessageResult>> updateGroup(
@@ -924,7 +857,8 @@ public class Manager implements Closeable {
             final GroupPermission addMemberPermission,
             final GroupPermission editDetailsPermission,
             final File avatarFile,
-            final Integer expirationTimer
+            final Integer expirationTimer,
+            final Boolean isAnnouncementGroup
     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
         var group = getGroupForUpdating(groupId);
 
@@ -942,7 +876,8 @@ public class Manager implements Closeable {
                         addMemberPermission,
                         editDetailsPermission,
                         avatarFile,
-                        expirationTimer);
+                        expirationTimer,
+                        isAnnouncementGroup);
             } catch (ConflictException e) {
                 // Detected conflicting update, refreshing group and trying again
                 group = getGroup(groupId, true);
@@ -958,7 +893,8 @@ public class Manager implements Closeable {
                         addMemberPermission,
                         editDetailsPermission,
                         avatarFile,
-                        expirationTimer);
+                        expirationTimer,
+                        isAnnouncementGroup);
             }
         }
 
@@ -978,7 +914,8 @@ public class Manager implements Closeable {
 
         account.getGroupStore().updateGroup(gv1);
 
-        return sendMessage(messageBuilder, gv1.getMembersIncludingPendingWithout(account.getSelfRecipientId()));
+        return sendHelper.sendGroupMessage(messageBuilder.build(),
+                gv1.getMembersIncludingPendingWithout(account.getSelfRecipientId()));
     }
 
     private void updateGroupV1Details(
@@ -1032,7 +969,8 @@ public class Manager implements Closeable {
             final GroupPermission addMemberPermission,
             final GroupPermission editDetailsPermission,
             final File avatarFile,
-            Integer expirationTimer
+            final Integer expirationTimer,
+            final Boolean isAnnouncementGroup
     ) throws IOException {
         Pair<Long, List<SendMessageResult>> result = null;
         if (group.isPendingMember(account.getSelfRecipientId())) {
@@ -1118,6 +1056,11 @@ public class Manager implements Closeable {
             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
         }
 
+        if (isAnnouncementGroup != null) {
+            var groupGroupChangePair = groupV2Helper.setIsAnnouncementGroup(group, isAnnouncementGroup);
+            result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
+        }
+
         if (name != null || description != null || avatarFile != null) {
             var groupGroupChangePair = groupV2Helper.updateGroup(group, name, description, avatarFile);
             if (avatarFile != null) {
@@ -1162,7 +1105,7 @@ public class Manager implements Closeable {
 
         final var messageBuilder = getGroupUpdateMessageBuilder(group, groupChange.toByteArray());
         account.getGroupStore().updateGroup(group);
-        return sendMessage(messageBuilder, members);
+        return sendHelper.sendGroupMessage(messageBuilder.build(), members);
     }
 
     private static int currentTimeDays() {
@@ -1174,14 +1117,15 @@ public class Manager implements Closeable {
     ) throws IOException {
         final var today = currentTimeDays();
         // Returns credentials for the next 7 days
-        final var credentials = groupsV2Api.getCredentials(today);
+        final var credentials = dependencies.getGroupsV2Api().getCredentials(today);
         // TODO cache credentials until they expire
         var authCredentialResponse = credentials.get(today);
         try {
-            return groupsV2Api.getGroupsV2AuthorizationString(account.getUuid(),
-                    today,
-                    groupSecretParams,
-                    authCredentialResponse);
+            return dependencies.getGroupsV2Api()
+                    .getGroupsV2AuthorizationString(account.getUuid(),
+                            today,
+                            groupSecretParams,
+                            authCredentialResponse);
         } catch (VerificationFailedException e) {
             throw new IOException(e);
         }
@@ -1191,9 +1135,9 @@ public class Manager implements Closeable {
             GroupIdV1 groupId, SignalServiceAddress recipient
     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
         GroupInfoV1 g;
-        var group = getGroupForSending(groupId);
+        var group = getGroupForUpdating(groupId);
         if (!(group instanceof GroupInfoV1)) {
-            throw new RuntimeException("Received an invalid group request for a v2 group!");
+            throw new IOException("Received an invalid group request for a v2 group!");
         }
         g = (GroupInfoV1) group;
 
@@ -1205,7 +1149,7 @@ public class Manager implements Closeable {
         var messageBuilder = getGroupUpdateMessageBuilder(g);
 
         // Send group message only to the recipient who requested it
-        return sendMessage(messageBuilder, Set.of(recipientId));
+        return sendHelper.sendGroupMessage(messageBuilder.build(), Set.of(recipientId));
     }
 
     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV1 g) throws AttachmentInvalidException {
@@ -1226,18 +1170,14 @@ public class Manager implements Closeable {
             throw new AttachmentInvalidException(g.getGroupId().toBase64(), e);
         }
 
-        return SignalServiceDataMessage.newBuilder()
-                .asGroupMessage(group.build())
-                .withExpiration(g.getMessageExpirationTime());
+        return createMessageBuilder().asGroupMessage(group.build()).withExpiration(g.getMessageExpirationTime());
     }
 
     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV2 g, byte[] signedGroupChange) {
         var group = SignalServiceGroupV2.newBuilder(g.getMasterKey())
                 .withRevision(g.getGroup().getRevision())
                 .withSignedGroupChange(signedGroupChange);
-        return SignalServiceDataMessage.newBuilder()
-                .asGroupMessage(group.build())
-                .withExpiration(g.getMessageExpirationTime());
+        return createMessageBuilder().asGroupMessage(group.build()).withExpiration(g.getMessageExpirationTime());
     }
 
     Pair<Long, List<SendMessageResult>> sendGroupInfoRequest(
@@ -1245,10 +1185,10 @@ public class Manager implements Closeable {
     ) throws IOException {
         var group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO).withId(groupId.serialize());
 
-        var messageBuilder = SignalServiceDataMessage.newBuilder().asGroupMessage(group.build());
+        var messageBuilder = createMessageBuilder().asGroupMessage(group.build());
 
         // Send group info request message to the recipient who sent us a message with this groupId
-        return sendMessage(messageBuilder, Set.of(resolveRecipient(recipient)));
+        return sendHelper.sendGroupMessage(messageBuilder.build(), Set.of(resolveRecipient(recipient)));
     }
 
     void sendReceipt(
@@ -1258,20 +1198,18 @@ public class Manager implements Closeable {
                 List.of(messageId),
                 System.currentTimeMillis());
 
-        createMessageSender().sendReceipt(remoteAddress,
-                unidentifiedAccessHelper.getAccessFor(resolveRecipient(remoteAddress)),
-                receiptMessage);
+        sendHelper.sendReceiptMessage(receiptMessage, resolveRecipient(remoteAddress));
     }
 
     public Pair<Long, List<SendMessageResult>> sendMessage(
             String messageText, List<String> attachments, List<String> recipients
     ) throws IOException, AttachmentInvalidException, InvalidNumberException {
-        final var messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
+        final var messageBuilder = createMessageBuilder().withBody(messageText);
         if (attachments != null) {
             var attachmentStreams = AttachmentUtils.getSignalServiceAttachments(attachments);
 
             // Upload attachments here, so we only upload once even for multiple recipients
-            var messageSender = createMessageSender();
+            var messageSender = dependencies.getMessageSender();
             var attachmentPointers = new ArrayList<SignalServiceAttachment>(attachmentStreams.size());
             for (var attachment : attachmentStreams) {
                 if (attachment.isStream()) {
@@ -1283,33 +1221,33 @@ public class Manager implements Closeable {
 
             messageBuilder.withAttachments(attachmentPointers);
         }
-        return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
+        return sendHelper.sendMessage(messageBuilder, getRecipientIds(recipients));
     }
 
     public Pair<Long, SendMessageResult> sendSelfMessage(
             String messageText, List<String> attachments
     ) throws IOException, AttachmentInvalidException {
-        final var messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
+        final var messageBuilder = createMessageBuilder().withBody(messageText);
         if (attachments != null) {
             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
         }
-        return sendSelfMessage(messageBuilder);
+        return sendHelper.sendSelfMessage(messageBuilder);
     }
 
     public Pair<Long, List<SendMessageResult>> sendRemoteDeleteMessage(
             long targetSentTimestamp, List<String> recipients
     ) throws IOException, InvalidNumberException {
         var delete = new SignalServiceDataMessage.RemoteDelete(targetSentTimestamp);
-        final var messageBuilder = SignalServiceDataMessage.newBuilder().withRemoteDelete(delete);
-        return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
+        final var messageBuilder = createMessageBuilder().withRemoteDelete(delete);
+        return sendHelper.sendMessage(messageBuilder, getRecipientIds(recipients));
     }
 
     public Pair<Long, List<SendMessageResult>> sendGroupRemoteDeleteMessage(
             long targetSentTimestamp, GroupId groupId
     ) throws IOException, NotAGroupMemberException, GroupNotFoundException {
         var delete = new SignalServiceDataMessage.RemoteDelete(targetSentTimestamp);
-        final var messageBuilder = SignalServiceDataMessage.newBuilder().withRemoteDelete(delete);
-        return sendGroupMessage(messageBuilder, groupId);
+        final var messageBuilder = createMessageBuilder().withRemoteDelete(delete);
+        return sendHelper.sendAsGroupMessage(messageBuilder, groupId);
     }
 
     public Pair<Long, List<SendMessageResult>> sendMessageReaction(
@@ -1320,36 +1258,30 @@ public class Manager implements Closeable {
                 remove,
                 resolveSignalServiceAddress(targetAuthorRecipientId),
                 targetSentTimestamp);
-        final var messageBuilder = SignalServiceDataMessage.newBuilder().withReaction(reaction);
-        return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
+        final var messageBuilder = createMessageBuilder().withReaction(reaction);
+        return sendHelper.sendMessage(messageBuilder, getRecipientIds(recipients));
     }
 
     public Pair<Long, List<SendMessageResult>> sendEndSessionMessage(List<String> recipients) throws IOException, InvalidNumberException {
-        var messageBuilder = SignalServiceDataMessage.newBuilder().asEndSessionMessage();
+        var messageBuilder = createMessageBuilder().asEndSessionMessage();
 
-        final var signalServiceAddresses = getSignalServiceAddresses(recipients);
+        final var recipientIds = getRecipientIds(recipients);
         try {
-            return sendMessage(messageBuilder, signalServiceAddresses);
-        } catch (Exception e) {
-            for (var address : signalServiceAddresses) {
-                handleEndSession(address);
+            return sendHelper.sendMessage(messageBuilder, recipientIds);
+        } finally {
+            for (var recipientId : recipientIds) {
+                handleEndSession(recipientId);
             }
-            throw e;
         }
     }
 
     void renewSession(RecipientId recipientId) throws IOException {
         account.getSessionStore().archiveSessions(recipientId);
         if (!recipientId.equals(getSelfRecipientId())) {
-            sendNullMessage(recipientId);
+            sendHelper.sendNullMessage(recipientId);
         }
     }
 
-    public String getContactName(String number) throws InvalidNumberException {
-        var contact = account.getContactStore().getContact(canonicalizeAndResolveRecipient(number));
-        return contact == null || contact.getName() == null ? "" : contact.getName();
-    }
-
     public void setContactName(String number, String name) throws InvalidNumberException, NotMasterDeviceException {
         if (!account.isMasterDevice()) {
             throw new NotMasterDeviceException();
@@ -1396,8 +1328,8 @@ public class Manager implements Closeable {
     }
 
     private void sendExpirationTimerUpdate(RecipientId recipientId) throws IOException {
-        final var messageBuilder = SignalServiceDataMessage.newBuilder().asExpirationUpdate();
-        sendMessage(messageBuilder, Set.of(recipientId));
+        final var messageBuilder = createMessageBuilder().asExpirationUpdate();
+        sendHelper.sendMessage(messageBuilder, Set.of(recipientId));
     }
 
     /**
@@ -1423,8 +1355,8 @@ public class Manager implements Closeable {
     }
 
     private void sendExpirationTimerUpdate(GroupIdV1 groupId) throws IOException, NotAGroupMemberException, GroupNotFoundException {
-        final var messageBuilder = SignalServiceDataMessage.newBuilder().asExpirationUpdate();
-        sendGroupMessage(messageBuilder, groupId);
+        final var messageBuilder = createMessageBuilder().asExpirationUpdate();
+        sendHelper.sendAsGroupMessage(messageBuilder, groupId);
     }
 
     /**
@@ -1436,7 +1368,7 @@ public class Manager implements Closeable {
     public String uploadStickerPack(File path) throws IOException, StickerPackInvalidException {
         var manifest = StickerUtils.getSignalServiceStickerManifestUpload(path);
 
-        var messageSender = createMessageSender();
+        var messageSender = dependencies.getMessageSender();
 
         var packKey = KeyUtils.createStickerUploadKey();
         var packIdString = messageSender.uploadStickerManifest(manifest, packKey);
@@ -1471,11 +1403,7 @@ public class Manager implements Closeable {
                 .setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS)
                 .build();
         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
-        try {
-            sendSyncMessage(message);
-        } catch (UntrustedIdentityException e) {
-            throw new AssertionError(e);
-        }
+        sendHelper.sendSyncMessage(message);
     }
 
     private void requestSyncContacts() throws IOException {
@@ -1483,11 +1411,7 @@ public class Manager implements Closeable {
                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS)
                 .build();
         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
-        try {
-            sendSyncMessage(message);
-        } catch (UntrustedIdentityException e) {
-            throw new AssertionError(e);
-        }
+        sendHelper.sendSyncMessage(message);
     }
 
     private void requestSyncBlocked() throws IOException {
@@ -1495,11 +1419,7 @@ public class Manager implements Closeable {
                 .setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED)
                 .build();
         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
-        try {
-            sendSyncMessage(message);
-        } catch (UntrustedIdentityException e) {
-            throw new AssertionError(e);
-        }
+        sendHelper.sendSyncMessage(message);
     }
 
     private void requestSyncConfiguration() throws IOException {
@@ -1507,11 +1427,7 @@ public class Manager implements Closeable {
                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION)
                 .build();
         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
-        try {
-            sendSyncMessage(message);
-        } catch (UntrustedIdentityException e) {
-            throw new AssertionError(e);
-        }
+        sendHelper.sendSyncMessage(message);
     }
 
     private void requestSyncKeys() throws IOException {
@@ -1519,20 +1435,16 @@ public class Manager implements Closeable {
                 .setType(SignalServiceProtos.SyncMessage.Request.Type.KEYS)
                 .build();
         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
-        try {
-            sendSyncMessage(message);
-        } catch (UntrustedIdentityException e) {
-            throw new AssertionError(e);
-        }
+        sendHelper.sendSyncMessage(message);
     }
 
     private byte[] getSenderCertificate() {
         byte[] certificate;
         try {
             if (account.isPhoneNumberShared()) {
-                certificate = accountManager.getSenderCertificate();
+                certificate = dependencies.getAccountManager().getSenderCertificate();
             } else {
-                certificate = accountManager.getSenderCertificateForPhoneNumberPrivacy();
+                certificate = dependencies.getAccountManager().getSenderCertificateForPhoneNumberPrivacy();
             }
         } catch (IOException e) {
             logger.warn("Failed to get sender certificate, ignoring: {}", e.getMessage());
@@ -1542,12 +1454,7 @@ public class Manager implements Closeable {
         return certificate;
     }
 
-    private void sendSyncMessage(SignalServiceSyncMessage message) throws IOException, UntrustedIdentityException {
-        var messageSender = createMessageSender();
-        messageSender.sendSyncMessage(message, unidentifiedAccessHelper.getAccessForSync());
-    }
-
-    private Set<RecipientId> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
+    private Set<RecipientId> getRecipientIds(Collection<String> numbers) throws InvalidNumberException {
         final var signalServiceAddresses = new HashSet<SignalServiceAddress>(numbers.size());
         final var addressesMissingUuid = new HashSet<SignalServiceAddress>();
 
@@ -1598,9 +1505,10 @@ public class Manager implements Closeable {
 
     private Map<String, UUID> getRegisteredUsers(final Set<String> numbers) throws IOException {
         try {
-            return accountManager.getRegisteredUsers(ServiceConfig.getIasKeyStore(),
-                    numbers,
-                    serviceEnvironmentConfig.getCdsMrenclave());
+            return dependencies.getAccountManager()
+                    .getRegisteredUsers(ServiceConfig.getIasKeyStore(),
+                            numbers,
+                            serviceEnvironmentConfig.getCdsMrenclave());
         } catch (Quote.InvalidQuoteFormatException | UnauthenticatedQuoteException | SignatureException | UnauthenticatedResponseException | InvalidKeyException e) {
             throw new IOException(e);
         }
@@ -1609,190 +1517,31 @@ public class Manager implements Closeable {
     public void sendTypingMessage(
             TypingAction action, Set<String> recipients
     ) throws IOException, UntrustedIdentityException, InvalidNumberException {
-        sendTypingMessageInternal(action, getSignalServiceAddresses(recipients));
-    }
-
-    private void sendTypingMessageInternal(
-            TypingAction action, Set<RecipientId> recipientIds
-    ) throws IOException, UntrustedIdentityException {
         final var timestamp = System.currentTimeMillis();
         var message = new SignalServiceTypingMessage(action.toSignalService(), timestamp, Optional.absent());
-        var messageSender = createMessageSender();
-        for (var recipientId : recipientIds) {
-            final var address = resolveSignalServiceAddress(recipientId);
-            messageSender.sendTyping(address, unidentifiedAccessHelper.getAccessFor(recipientId), message);
-        }
+        sendHelper.sendTypingMessage(message, getRecipientIds(recipients));
     }
 
     public void sendGroupTypingMessage(
             TypingAction action, GroupId groupId
     ) throws IOException, NotAGroupMemberException, GroupNotFoundException {
         final var timestamp = System.currentTimeMillis();
-        final var g = getGroupForSending(groupId);
         final var message = new SignalServiceTypingMessage(action.toSignalService(),
                 timestamp,
                 Optional.of(groupId.serialize()));
-        final var messageSender = createMessageSender();
-        final var recipientIdList = new ArrayList<>(g.getMembersWithout(account.getSelfRecipientId()));
-        final var addresses = recipientIdList.stream()
-                .map(this::resolveSignalServiceAddress)
-                .collect(Collectors.toList());
-        messageSender.sendTyping(addresses, unidentifiedAccessHelper.getAccessFor(recipientIdList), message, null);
+        sendHelper.sendGroupTypingMessage(message, groupId);
     }
 
-    private Pair<Long, List<SendMessageResult>> sendMessage(
-            SignalServiceDataMessage.Builder messageBuilder, Set<RecipientId> recipientIds
-    ) throws IOException {
+    private SignalServiceDataMessage.Builder createMessageBuilder() {
         final var timestamp = System.currentTimeMillis();
-        messageBuilder.withTimestamp(timestamp);
-        getOrCreateMessagePipe();
-        getOrCreateUnidentifiedMessagePipe();
-        SignalServiceDataMessage message = null;
-        try {
-            message = messageBuilder.build();
-            if (message.getGroupContext().isPresent()) {
-                try {
-                    var messageSender = createMessageSender();
-                    final var isRecipientUpdate = false;
-                    final var recipientIdList = new ArrayList<>(recipientIds);
-                    final var addresses = recipientIdList.stream()
-                            .map(this::resolveSignalServiceAddress)
-                            .collect(Collectors.toList());
-                    var result = messageSender.sendDataMessage(addresses,
-                            unidentifiedAccessHelper.getAccessFor(recipientIdList),
-                            isRecipientUpdate,
-                            ContentHint.DEFAULT,
-                            message);
-
-                    for (var r : result) {
-                        if (r.getIdentityFailure() != null) {
-                            final var recipientId = resolveRecipient(r.getAddress());
-                            final var newIdentity = account.getIdentityKeyStore()
-                                    .saveIdentity(recipientId, r.getIdentityFailure().getIdentityKey(), new Date());
-                            if (newIdentity) {
-                                account.getSessionStore().archiveSessions(recipientId);
-                            }
-                        }
-                    }
-
-                    return new Pair<>(timestamp, result);
-                } catch (UntrustedIdentityException e) {
-                    return new Pair<>(timestamp, List.of());
-                }
-            } else {
-                // Send to all individually, so sync messages are sent correctly
-                messageBuilder.withProfileKey(account.getProfileKey().serialize());
-                var results = new ArrayList<SendMessageResult>(recipientIds.size());
-                for (var recipientId : recipientIds) {
-                    final var contact = account.getContactStore().getContact(recipientId);
-                    final var expirationTime = contact != null ? contact.getMessageExpirationTime() : 0;
-                    messageBuilder.withExpiration(expirationTime);
-                    message = messageBuilder.build();
-                    results.add(sendMessage(recipientId, message));
-                }
-                return new Pair<>(timestamp, results);
-            }
-        } finally {
-            if (message != null && message.isEndSession()) {
-                for (var recipient : recipientIds) {
-                    handleEndSession(recipient);
-                }
-            }
-        }
-    }
 
-    private Pair<Long, SendMessageResult> sendSelfMessage(
-            SignalServiceDataMessage.Builder messageBuilder
-    ) throws IOException {
-        final var timestamp = System.currentTimeMillis();
+        var messageBuilder = SignalServiceDataMessage.newBuilder();
         messageBuilder.withTimestamp(timestamp);
-        getOrCreateMessagePipe();
-        getOrCreateUnidentifiedMessagePipe();
-        final var recipientId = account.getSelfRecipientId();
-
-        final var contact = account.getContactStore().getContact(recipientId);
-        final var expirationTime = contact != null ? contact.getMessageExpirationTime() : 0;
-        messageBuilder.withExpiration(expirationTime);
-
-        var message = messageBuilder.build();
-        final var result = sendSelfMessage(message);
-        return new Pair<>(timestamp, result);
-    }
-
-    private SendMessageResult sendSelfMessage(SignalServiceDataMessage message) throws IOException {
-        var messageSender = createMessageSender();
-
-        var recipientId = account.getSelfRecipientId();
-
-        final var unidentifiedAccess = unidentifiedAccessHelper.getAccessFor(recipientId);
-        var recipient = resolveSignalServiceAddress(recipientId);
-        var transcript = new SentTranscriptMessage(Optional.of(recipient),
-                message.getTimestamp(),
-                message,
-                message.getExpiresInSeconds(),
-                Map.of(recipient, unidentifiedAccess.isPresent()),
-                false);
-        var syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
-
-        try {
-            var startTime = System.currentTimeMillis();
-            messageSender.sendSyncMessage(syncMessage, unidentifiedAccess);
-            return SendMessageResult.success(recipient,
-                    unidentifiedAccess.isPresent(),
-                    false,
-                    System.currentTimeMillis() - startTime);
-        } catch (UntrustedIdentityException e) {
-            return SendMessageResult.identityFailure(recipient, e.getIdentityKey());
-        }
-    }
-
-    private SendMessageResult sendMessage(
-            RecipientId recipientId, SignalServiceDataMessage message
-    ) throws IOException {
-        var messageSender = createMessageSender();
-
-        final var address = resolveSignalServiceAddress(recipientId);
-        try {
-            try {
-                return messageSender.sendDataMessage(address,
-                        unidentifiedAccessHelper.getAccessFor(recipientId),
-                        ContentHint.DEFAULT,
-                        message);
-            } catch (UnregisteredUserException e) {
-                final var newRecipientId = refreshRegisteredUser(recipientId);
-                return messageSender.sendDataMessage(resolveSignalServiceAddress(newRecipientId),
-                        unidentifiedAccessHelper.getAccessFor(newRecipientId),
-                        ContentHint.DEFAULT,
-                        message);
-            }
-        } catch (UntrustedIdentityException e) {
-            return SendMessageResult.identityFailure(address, e.getIdentityKey());
-        }
+        return messageBuilder;
     }
 
-    private SendMessageResult sendNullMessage(RecipientId recipientId) throws IOException {
-        var messageSender = createMessageSender();
-
-        final var address = resolveSignalServiceAddress(recipientId);
-        try {
-            try {
-                return messageSender.sendNullMessage(address, unidentifiedAccessHelper.getAccessFor(recipientId));
-            } catch (UnregisteredUserException e) {
-                final var newRecipientId = refreshRegisteredUser(recipientId);
-                final var newAddress = resolveSignalServiceAddress(newRecipientId);
-                return messageSender.sendNullMessage(newAddress, unidentifiedAccessHelper.getAccessFor(newRecipientId));
-            }
-        } catch (UntrustedIdentityException e) {
-            return SendMessageResult.identityFailure(address, e.getIdentityKey());
-        }
-    }
-
-    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);
-        return cipher.decrypt(envelope);
+    private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, ProtocolUntrustedIdentityException, InvalidMessageStructureException {
+        return dependencies.getCipher().decrypt(envelope);
     }
 
     private void handleEndSession(RecipientId recipientId) {
@@ -2022,6 +1771,9 @@ public class Manager implements Closeable {
             try {
                 action.execute(this);
             } catch (Throwable e) {
+                if (e instanceof AssertionError && e.getCause() instanceof InterruptedException) {
+                    Thread.currentThread().interrupt();
+                }
                 logger.warn("Message action failed.", e);
             }
         }
@@ -2068,16 +1820,17 @@ public class Manager implements Closeable {
             boolean returnOnTimeout,
             boolean ignoreAttachments,
             ReceiveMessageHandler handler
-    ) throws IOException {
+    ) throws IOException, InterruptedException {
         retryFailedReceivedMessages(handler, ignoreAttachments);
 
         Set<HandleAction> queuedActions = null;
 
-        final var messagePipe = getOrCreateMessagePipe();
+        final var signalWebSocket = dependencies.getSignalWebSocket();
+        signalWebSocket.connect();
 
         var hasCaughtUpWithOldMessages = false;
 
-        while (true) {
+        while (!Thread.interrupted()) {
             SignalServiceEnvelope envelope;
             SignalServiceContent content = null;
             Exception exception = null;
@@ -2085,7 +1838,7 @@ public class Manager implements Closeable {
             account.setLastReceiveTimestamp(System.currentTimeMillis());
             logger.debug("Checking for new message from server");
             try {
-                var result = messagePipe.readOrEmpty(timeout, unit, envelope1 -> {
+                var result = signalWebSocket.readOrEmpty(unit.toMillis(timeout), envelope1 -> {
                     final var recipientId = envelope1.hasSource()
                             ? resolveRecipient(envelope1.getSourceIdentifier())
                             : null;
@@ -2104,6 +1857,9 @@ public class Manager implements Closeable {
                             try {
                                 action.execute(this);
                             } catch (Throwable e) {
+                                if (e instanceof AssertionError && e.getCause() instanceof InterruptedException) {
+                                    Thread.currentThread().interrupt();
+                                }
                                 logger.warn("Message action failed.", e);
                             }
                         }
@@ -2114,6 +1870,16 @@ public class Manager implements Closeable {
                     // Continue to wait another timeout for new messages
                     continue;
                 }
+            } catch (AssertionError e) {
+                if (e.getCause() instanceof InterruptedException) {
+                    throw (InterruptedException) e.getCause();
+                } else {
+                    throw e;
+                }
+            } catch (WebSocketUnavailableException e) {
+                logger.debug("Pipe unexpectedly unavailable, connecting");
+                signalWebSocket.connect();
+                continue;
             } catch (TimeoutException e) {
                 if (returnOnTimeout) return;
                 continue;
@@ -2124,7 +1890,6 @@ public class Manager implements Closeable {
                 // address/uuid in envelope is sent by server
                 resolveRecipientTrusted(envelope.getSourceAddress());
             }
-            final var notAGroupMember = isNotAGroupMember(envelope, content);
             if (!envelope.isReceipt()) {
                 try {
                     content = decryptMessage(envelope);
@@ -2147,6 +1912,9 @@ public class Manager implements Closeable {
                         try {
                             action.execute(this);
                         } catch (Throwable e) {
+                            if (e instanceof AssertionError && e.getCause() instanceof InterruptedException) {
+                                Thread.currentThread().interrupt();
+                            }
                             logger.warn("Message action failed.", e);
                         }
                     }
@@ -2157,10 +1925,13 @@ public class Manager implements Closeable {
                     queuedActions.addAll(actions);
                 }
             }
+            final var notAllowedToSendToGroup = isNotAllowedToSendToGroup(envelope, content);
             if (isMessageBlocked(envelope, content)) {
                 logger.info("Ignoring a message from blocked user/group: {}", envelope.getTimestamp());
-            } else if (notAGroupMember) {
-                logger.info("Ignoring a message from a non group member: {}", envelope.getTimestamp());
+            } else if (notAllowedToSendToGroup) {
+                logger.info("Ignoring a group message from an unauthorized sender (no member or admin): {} {}",
+                        (envelope.hasSource() ? envelope.getSourceAddress() : content.getSender()).getIdentifier(),
+                        envelope.getTimestamp());
             } else {
                 handler.handleMessage(envelope, content, exception);
             }
@@ -2223,7 +1994,7 @@ public class Manager implements Closeable {
         return sourceContact != null && sourceContact.isBlocked();
     }
 
-    private boolean isNotAGroupMember(
+    private boolean isNotAllowedToSendToGroup(
             SignalServiceEnvelope envelope, SignalServiceContent content
     ) {
         SignalServiceAddress source;
@@ -2235,23 +2006,32 @@ public class Manager implements Closeable {
             return false;
         }
 
-        if (content != null && content.getDataMessage().isPresent()) {
-            var message = content.getDataMessage().get();
-            if (message.getGroupContext().isPresent()) {
-                if (message.getGroupContext().get().getGroupV1().isPresent()) {
-                    var groupInfo = message.getGroupContext().get().getGroupV1().get();
-                    if (groupInfo.getType() == SignalServiceGroup.Type.QUIT) {
-                        return false;
-                    }
-                }
-                var groupId = GroupUtils.getGroupId(message.getGroupContext().get());
-                var group = getGroup(groupId);
-                if (group != null && !group.isMember(resolveRecipient(source))) {
-                    return true;
-                }
+        if (content == null || !content.getDataMessage().isPresent()) {
+            return false;
+        }
+
+        var message = content.getDataMessage().get();
+        if (!message.getGroupContext().isPresent()) {
+            return false;
+        }
+
+        if (message.getGroupContext().get().getGroupV1().isPresent()) {
+            var groupInfo = message.getGroupContext().get().getGroupV1().get();
+            if (groupInfo.getType() == SignalServiceGroup.Type.QUIT) {
+                return false;
             }
         }
-        return false;
+
+        var groupId = GroupUtils.getGroupId(message.getGroupContext().get());
+        var group = getGroup(groupId);
+        if (group == null) {
+            return false;
+        }
+
+        final var recipientId = resolveRecipient(source);
+        return !group.isMember(recipientId) || (
+                group.isAnnouncementGroup() && !group.isAdmin(recipientId)
+        );
     }
 
     private List<HandleAction> handleMessage(
@@ -2543,6 +2323,9 @@ public class Manager implements Closeable {
             avatarStore.storeProfileAvatar(address,
                     outputStream -> retrieveProfileAvatar(avatarPath, profileKey, outputStream));
         } catch (Throwable e) {
+            if (e instanceof AssertionError && e.getCause() instanceof InterruptedException) {
+                Thread.currentThread().interrupt();
+            }
             logger.warn("Failed to download profile avatar, ignoring: {}", e.getMessage());
         }
     }
@@ -2578,12 +2361,11 @@ public class Manager implements Closeable {
     private void retrieveGroupV2Avatar(
             GroupSecretParams groupSecretParams, String cdnKey, OutputStream outputStream
     ) throws IOException {
-        var groupOperations = groupsV2Operations.forGroup(groupSecretParams);
+        var groupOperations = dependencies.getGroupsV2Operations().forGroup(groupSecretParams);
 
         var tmpFile = IOUtils.createTempFile();
-        try (InputStream input = messageReceiver.retrieveGroupsV2ProfileAvatar(cdnKey,
-                tmpFile,
-                ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
+        try (InputStream input = dependencies.getMessageReceiver()
+                .retrieveGroupsV2ProfileAvatar(cdnKey, tmpFile, ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
             var encryptedData = IOUtils.readFully(input);
 
             var decryptedData = groupOperations.decryptAvatar(encryptedData);
@@ -2603,10 +2385,11 @@ public class Manager implements Closeable {
             String avatarPath, ProfileKey profileKey, OutputStream outputStream
     ) throws IOException {
         var tmpFile = IOUtils.createTempFile();
-        try (var input = messageReceiver.retrieveProfileAvatar(avatarPath,
-                tmpFile,
-                profileKey,
-                ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
+        try (var input = dependencies.getMessageReceiver()
+                .retrieveProfileAvatar(avatarPath,
+                        tmpFile,
+                        profileKey,
+                        ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
             // Use larger buffer size to prevent AssertionError: Need: 12272 but only have: 8192 ...
             IOUtils.copyStream(input, outputStream, (int) ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE);
         } finally {
@@ -2654,10 +2437,11 @@ public class Manager implements Closeable {
     private InputStream retrieveAttachmentAsStream(
             SignalServiceAttachmentPointer pointer, File tmpFile
     ) throws IOException, InvalidMessageException, MissingConfigurationException {
-        return messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
+        return dependencies.getMessageReceiver()
+                .retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
     }
 
-    void sendGroups() throws IOException, UntrustedIdentityException {
+    void sendGroups() throws IOException {
         var groupsFile = IOUtils.createTempFile();
 
         try {
@@ -2691,7 +2475,7 @@ public class Manager implements Closeable {
                             .withLength(groupsFile.length())
                             .build();
 
-                    sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
+                    sendHelper.sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
                 }
             }
         } finally {
@@ -2703,7 +2487,7 @@ public class Manager implements Closeable {
         }
     }
 
-    public void sendContacts() throws IOException, UntrustedIdentityException {
+    public void sendContacts() throws IOException {
         var contactsFile = IOUtils.createTempFile();
 
         try {
@@ -2759,7 +2543,8 @@ public class Manager implements Closeable {
                             .withLength(contactsFile.length())
                             .build();
 
-                    sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
+                    sendHelper.sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream,
+                            true)));
                 }
             }
         } finally {
@@ -2771,7 +2556,7 @@ public class Manager implements Closeable {
         }
     }
 
-    void sendBlockedList() throws IOException, UntrustedIdentityException {
+    void sendBlockedList() throws IOException {
         var addresses = new ArrayList<SignalServiceAddress>();
         for (var record : account.getContactStore().getContacts()) {
             if (record.second().isBlocked()) {
@@ -2784,17 +2569,17 @@ public class Manager implements Closeable {
                 groupIds.add(record.getGroupId().serialize());
             }
         }
-        sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
+        sendHelper.sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
     }
 
     private void sendVerifiedMessage(
             SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel
-    ) throws IOException, UntrustedIdentityException {
+    ) throws IOException {
         var verifiedMessage = new VerifiedMessage(destination,
                 identityKey,
                 trustLevel.toVerifiedState(),
                 System.currentTimeMillis());
-        sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
+        sendHelper.sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
     }
 
     public List<Pair<RecipientId, Contact>> getContacts() {
@@ -2895,21 +2680,44 @@ public class Manager implements Closeable {
         try {
             var address = account.getRecipientStore().resolveServiceAddress(recipientId);
             sendVerifiedMessage(address, identity.getIdentityKey(), trustLevel);
-        } catch (IOException | UntrustedIdentityException e) {
+        } catch (IOException e) {
             logger.warn("Failed to send verification sync message: {}", e.getMessage());
         }
 
         return true;
     }
 
-    public String computeSafetyNumber(
-            SignalServiceAddress theirAddress, IdentityKey theirIdentityKey
+    private void handleIdentityFailure(
+            final RecipientId recipientId, final SendMessageResult.IdentityFailure identityFailure
     ) {
-        return Utils.computeSafetyNumber(ServiceConfig.capabilities.isUuid(),
+        final var identityKey = identityFailure.getIdentityKey();
+        if (identityKey != null) {
+            final var newIdentity = account.getIdentityKeyStore().saveIdentity(recipientId, identityKey, new Date());
+            if (newIdentity) {
+                account.getSessionStore().archiveSessions(recipientId);
+            }
+        } else {
+            // Retrieve profile to get the current identity key from the server
+            retrieveEncryptedProfile(recipientId);
+        }
+    }
+
+    public String computeSafetyNumber(SignalServiceAddress theirAddress, IdentityKey theirIdentityKey) {
+        final var fingerprint = Utils.computeSafetyNumber(capabilities.isUuid(),
                 account.getSelfAddress(),
                 getIdentityKeyPair().getPublicKey(),
                 theirAddress,
                 theirIdentityKey);
+        return fingerprint == null ? null : fingerprint.getDisplayableFingerprint().getDisplayText();
+    }
+
+    public byte[] computeSafetyNumberForScanning(SignalServiceAddress theirAddress, IdentityKey theirIdentityKey) {
+        final var fingerprint = Utils.computeSafetyNumber(capabilities.isUuid(),
+                account.getSelfAddress(),
+                getIdentityKeyPair().getPublicKey(),
+                theirAddress,
+                theirIdentityKey);
+        return fingerprint == null ? null : fingerprint.getScannableFingerprint().getSerialized();
     }
 
     @Deprecated
@@ -2932,14 +2740,16 @@ public class Manager implements Closeable {
         return account.getRecipientStore().resolveServiceAddress(recipientId);
     }
 
-    public RecipientId canonicalizeAndResolveRecipient(String identifier) throws InvalidNumberException {
-        var canonicalizedNumber = UuidUtil.isUuid(identifier)
-                ? identifier
-                : PhoneNumberFormatter.formatNumber(identifier, account.getUsername());
+    private RecipientId canonicalizeAndResolveRecipient(String identifier) throws InvalidNumberException {
+        var canonicalizedNumber = UuidUtil.isUuid(identifier) ? identifier : canonicalizePhoneNumber(identifier);
 
         return resolveRecipient(canonicalizedNumber);
     }
 
+    private String canonicalizePhoneNumber(final String number) throws InvalidNumberException {
+        return PhoneNumberFormatter.formatNumber(number, account.getUsername());
+    }
+
     private RecipientId resolveRecipient(final String identifier) {
         var address = Utils.getSignalServiceAddressFromIdentifier(identifier);
 
@@ -2955,7 +2765,10 @@ public class Manager implements Closeable {
     }
 
     private void enqueueJob(Job job) {
-        var context = new Context(account, accountManager, messageReceiver, stickerPackStore);
+        var context = new Context(account,
+                dependencies.getAccountManager(),
+                dependencies.getMessageReceiver(),
+                stickerPackStore);
         job.run(context);
     }
 
@@ -2967,15 +2780,7 @@ public class Manager implements Closeable {
     void close(boolean closeAccount) throws IOException {
         executor.shutdown();
 
-        if (messagePipe != null) {
-            messagePipe.shutdown();
-            messagePipe = null;
-        }
-
-        if (unidentifiedMessagePipe != null) {
-            unidentifiedMessagePipe.shutdown();
-            unidentifiedMessagePipe = null;
-        }
+        dependencies.getSignalWebSocket().disconnect();
 
         if (closeAccount && account != null) {
             account.close();