feat: incorporate hashes from library, more wrapper for user groups and serialization from c++

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0x330a 2023-02-28 17:47:25 +11:00
parent c351cd6038
commit 858893a0e9
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12 changed files with 62 additions and 61 deletions

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@ -3,7 +3,6 @@ package org.thoughtcrime.securesms.database
import android.content.Context import android.content.Context
import androidx.core.content.contentValuesOf import androidx.core.content.contentValuesOf
import androidx.core.database.getBlobOrNull import androidx.core.database.getBlobOrNull
import androidx.core.database.getStringOrNull
import org.thoughtcrime.securesms.database.helpers.SQLCipherOpenHelper import org.thoughtcrime.securesms.database.helpers.SQLCipherOpenHelper
class ConfigDatabase(context: Context, helper: SQLCipherOpenHelper): Database(context, helper) { class ConfigDatabase(context: Context, helper: SQLCipherOpenHelper): Database(context, helper) {
@ -12,35 +11,32 @@ class ConfigDatabase(context: Context, helper: SQLCipherOpenHelper): Database(co
private const val VARIANT = "variant" private const val VARIANT = "variant"
private const val PUBKEY = "publicKey" private const val PUBKEY = "publicKey"
private const val DATA = "data" private const val DATA = "data"
private const val COMBINED_MESSAGE_HASHES = "combined_message_hashes"
private const val TABLE_NAME = "configs_table" private const val TABLE_NAME = "configs_table"
const val CREATE_CONFIG_TABLE_COMMAND = const val CREATE_CONFIG_TABLE_COMMAND =
"CREATE TABLE $TABLE_NAME ($VARIANT TEXT NOT NULL, $PUBKEY TEXT NOT NULL, $DATA BLOB, $COMBINED_MESSAGE_HASHES TEXT, PRIMARY KEY($VARIANT, $PUBKEY));" "CREATE TABLE $TABLE_NAME ($VARIANT TEXT NOT NULL, $PUBKEY TEXT NOT NULL, $DATA BLOB, PRIMARY KEY($VARIANT, $PUBKEY));"
private const val VARIANT_AND_PUBKEY_WHERE = "$VARIANT = ? AND $PUBKEY = ?" private const val VARIANT_AND_PUBKEY_WHERE = "$VARIANT = ? AND $PUBKEY = ?"
} }
fun storeConfig(variant: String, publicKey: String, data: ByteArray, hashes: List<String>) { fun storeConfig(variant: String, publicKey: String, data: ByteArray) {
val db = writableDatabase val db = writableDatabase
val contentValues = contentValuesOf( val contentValues = contentValuesOf(
VARIANT to variant, VARIANT to variant,
PUBKEY to publicKey, PUBKEY to publicKey,
DATA to data, DATA to data,
COMBINED_MESSAGE_HASHES to hashes.joinToString(",")
) )
db.insertOrUpdate(TABLE_NAME, contentValues, VARIANT_AND_PUBKEY_WHERE, arrayOf(variant, publicKey)) db.insertOrUpdate(TABLE_NAME, contentValues, VARIANT_AND_PUBKEY_WHERE, arrayOf(variant, publicKey))
} }
fun retrieveConfigAndHashes(variant: String, publicKey: String): Pair<ByteArray,List<String>>? { fun retrieveConfigAndHashes(variant: String, publicKey: String): ByteArray? {
val db = readableDatabase val db = readableDatabase
val query = db.query(TABLE_NAME, arrayOf(DATA, COMBINED_MESSAGE_HASHES), VARIANT_AND_PUBKEY_WHERE, arrayOf(variant, publicKey),null, null, null) val query = db.query(TABLE_NAME, arrayOf(DATA), VARIANT_AND_PUBKEY_WHERE, arrayOf(variant, publicKey),null, null, null)
return query?.use { cursor -> return query?.use { cursor ->
if (!cursor.moveToFirst()) return@use null if (!cursor.moveToFirst()) return@use null
val bytes = cursor.getBlobOrNull(cursor.getColumnIndex(DATA)) ?: return@use null val bytes = cursor.getBlobOrNull(cursor.getColumnIndex(DATA)) ?: return@use null
val hashes = cursor.getStringOrNull(cursor.getColumnIndex(COMBINED_MESSAGE_HASHES))?.split(",") ?: emptyList() bytes
bytes to hashes
} }
} }

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@ -47,10 +47,7 @@ class ConfigFactory(private val context: Context,
Log.d("Loki-DBG", "Getting user configs and hashes") Log.d("Loki-DBG", "Getting user configs and hashes")
val userDump = configDatabase.retrieveConfigAndHashes(SharedConfigMessage.Kind.USER_PROFILE.name, publicKey) val userDump = configDatabase.retrieveConfigAndHashes(SharedConfigMessage.Kind.USER_PROFILE.name, publicKey)
_userConfig = if (userDump != null) { _userConfig = if (userDump != null) {
val (bytes, hashes) = userDump UserProfile.newInstance(secretKey, userDump)
userHashes.clear()
userHashes.addAll(hashes)
UserProfile.newInstance(secretKey, bytes)
} else { } else {
UserProfile.newInstance(secretKey) UserProfile.newInstance(secretKey)
} }
@ -63,10 +60,7 @@ class ConfigFactory(private val context: Context,
val (secretKey, publicKey) = maybeGetUserInfo() ?: return@synchronized null val (secretKey, publicKey) = maybeGetUserInfo() ?: return@synchronized null
val contactsDump = configDatabase.retrieveConfigAndHashes(SharedConfigMessage.Kind.CONTACTS.name, publicKey) val contactsDump = configDatabase.retrieveConfigAndHashes(SharedConfigMessage.Kind.CONTACTS.name, publicKey)
_contacts = if (contactsDump != null) { _contacts = if (contactsDump != null) {
val (bytes, hashes) = contactsDump Contacts.newInstance(secretKey, contactsDump)
contactsHashes.clear()
contactsHashes.addAll(hashes)
Contacts.newInstance(secretKey, bytes)
} else { } else {
Contacts.newInstance(secretKey) Contacts.newInstance(secretKey)
} }
@ -79,10 +73,7 @@ class ConfigFactory(private val context: Context,
val (secretKey, publicKey) = maybeGetUserInfo() ?: return@synchronized null val (secretKey, publicKey) = maybeGetUserInfo() ?: return@synchronized null
val convoDump = configDatabase.retrieveConfigAndHashes(SharedConfigMessage.Kind.CONVO_INFO_VOLATILE.name, publicKey) val convoDump = configDatabase.retrieveConfigAndHashes(SharedConfigMessage.Kind.CONVO_INFO_VOLATILE.name, publicKey)
_convoVolatileConfig = if (convoDump != null) { _convoVolatileConfig = if (convoDump != null) {
val (bytes, hashes) = convoDump ConversationVolatileConfig.newInstance(secretKey, convoDump)
convoHashes.clear()
convoHashes.addAll(hashes)
ConversationVolatileConfig.newInstance(secretKey, bytes)
} else { } else {
ConversationVolatileConfig.newInstance(secretKey) ConversationVolatileConfig.newInstance(secretKey)
} }
@ -94,19 +85,19 @@ class ConfigFactory(private val context: Context,
private fun persistUserConfigDump() = synchronized(userLock) { private fun persistUserConfigDump() = synchronized(userLock) {
val dumped = user?.dump() ?: return val dumped = user?.dump() ?: return
val (_, publicKey) = maybeGetUserInfo() ?: return val (_, publicKey) = maybeGetUserInfo() ?: return
configDatabase.storeConfig(SharedConfigMessage.Kind.USER_PROFILE.name, publicKey, dumped, userHashes.toList()) configDatabase.storeConfig(SharedConfigMessage.Kind.USER_PROFILE.name, publicKey, dumped)
} }
private fun persistContactsConfigDump() = synchronized(contactsLock) { private fun persistContactsConfigDump() = synchronized(contactsLock) {
val dumped = contacts?.dump() ?: return val dumped = contacts?.dump() ?: return
val (_, publicKey) = maybeGetUserInfo() ?: return val (_, publicKey) = maybeGetUserInfo() ?: return
configDatabase.storeConfig(SharedConfigMessage.Kind.CONTACTS.name, publicKey, dumped, contactsHashes.toList()) configDatabase.storeConfig(SharedConfigMessage.Kind.CONTACTS.name, publicKey, dumped)
} }
private fun persistConvoVolatileConfigDump() = synchronized (convoVolatileLock) { private fun persistConvoVolatileConfigDump() = synchronized (convoVolatileLock) {
val dumped = convoVolatile?.dump() ?: return val dumped = convoVolatile?.dump() ?: return
val (_, publicKey) = maybeGetUserInfo() ?: return val (_, publicKey) = maybeGetUserInfo() ?: return
configDatabase.storeConfig(SharedConfigMessage.Kind.CONVO_INFO_VOLATILE.name, publicKey, dumped, convoHashes.toList()) configDatabase.storeConfig(SharedConfigMessage.Kind.CONVO_INFO_VOLATILE.name, publicKey, dumped)
} }
override fun persist(forConfigObject: ConfigBase) { override fun persist(forConfigObject: ConfigBase) {

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@ -4,6 +4,7 @@ import android.content.Context
import network.loki.messenger.libsession_util.util.UserPic import network.loki.messenger.libsession_util.util.UserPic
import org.session.libsession.messaging.contacts.Contact import org.session.libsession.messaging.contacts.Contact
import org.session.libsession.utilities.SSKEnvironment import org.session.libsession.utilities.SSKEnvironment
import org.session.libsession.utilities.TextSecurePreferences
import org.session.libsession.utilities.recipients.Recipient import org.session.libsession.utilities.recipients.Recipient
import org.thoughtcrime.securesms.ApplicationContext import org.thoughtcrime.securesms.ApplicationContext
import org.thoughtcrime.securesms.dependencies.ConfigFactory import org.thoughtcrime.securesms.dependencies.ConfigFactory
@ -84,6 +85,7 @@ class ProfileManager(private val context: Context, private val configFactory: Co
override fun contactUpdatedInternal(contact: Contact) { override fun contactUpdatedInternal(contact: Contact) {
val contactConfig = configFactory.contacts ?: return val contactConfig = configFactory.contacts ?: return
if (contact.sessionID == TextSecurePreferences.getLocalNumber(context)) return
contactConfig.upsertContact(contact.sessionID) { contactConfig.upsertContact(contact.sessionID) {
this.name = contact.name.orEmpty() this.name = contact.name.orEmpty()
this.nickname = contact.nickname.orEmpty() this.nickname = contact.nickname.orEmpty()

@ -1 +1 @@
Subproject commit c76d7e06f6c1c258fe930bcd8d567b3bd4067262 Subproject commit 5a7569861d1b39d866ba7d8c7440db1908e84798

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@ -120,29 +120,18 @@ Java_network_loki_messenger_libsession_1util_ConfigBase_00024Companion_kindFor(J
return nullptr; return nullptr;
} }
} }
extern "C"
JNIEXPORT void JNICALL
Java_network_loki_messenger_libsession_1util_ConfigBase_removeObsoleteHashes(JNIEnv *env,
jobject thiz,
jobjectArray to_remove) {
auto conf = ptrToConfigBase(env, thiz);
size_t number = env->GetArrayLength(to_remove);
for (int i = 0; i < number; i++) {
auto jElement = (jstring) env->GetObjectArrayElement(to_remove, i);
auto element_as_string = env->GetStringUTFChars(jElement, nullptr);
// TODO: uncomment when this is re-implemented
// conf->confirm_removed(element_as_string);
env->ReleaseStringUTFChars(jElement, element_as_string);
}
}
extern "C" extern "C"
JNIEXPORT jobject JNICALL JNIEXPORT jobject JNICALL
Java_network_loki_messenger_libsession_1util_ConfigBase_obsoleteHashes(JNIEnv *env, jobject thiz) { Java_network_loki_messenger_libsession_1util_ConfigBase_currentHashes(JNIEnv *env, jobject thiz) {
auto conf = ptrToConfigBase(env, thiz); auto conf = ptrToConfigBase(env, thiz);
jclass stack = env->FindClass("java/util/Stack"); jclass stack = env->FindClass("java/util/Stack");
jmethodID init = env->GetMethodID(stack, "<init>", "()V"); jmethodID init = env->GetMethodID(stack, "<init>", "()V");
jobject our_stack = env->NewObject(stack, init); jobject our_stack = env->NewObject(stack, init);
jmethodID push = env->GetMethodID(stack, "push", "(Ljava/lang/Object;)Ljava/lang/Object;"); jmethodID push = env->GetMethodID(stack, "push", "(Ljava/lang/Object;)Ljava/lang/Object;");
// TODO: implement obsoleteHashes() auto vec = conf->current_hashes();
for (std::string element: vec) {
env->CallObjectMethod(our_stack, push, env->NewStringUTF(element.data()));
}
return our_stack; return our_stack;
} }

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@ -14,7 +14,7 @@ inline session::config::Contacts *ptrToContacts(JNIEnv *env, jobject obj) {
inline jobject serialize_contact(JNIEnv *env, session::config::contact_info info) { inline jobject serialize_contact(JNIEnv *env, session::config::contact_info info) {
jclass contactClass = env->FindClass("network/loki/messenger/libsession_util/util/Contact"); jclass contactClass = env->FindClass("network/loki/messenger/libsession_util/util/Contact");
jmethodID constructor = env->GetMethodID(contactClass, "<init>", jmethodID constructor = env->GetMethodID(contactClass, "<init>",
"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;ZZZLnetwork/loki/messenger/libsession_util/util/UserPic;)V"); "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;ZZZLnetwork/loki/messenger/libsession_util/util/UserPic;I)V");
jstring id = env->NewStringUTF(info.session_id.data()); jstring id = env->NewStringUTF(info.session_id.data());
jstring name = env->NewStringUTF(info.name.data()); jstring name = env->NewStringUTF(info.name.data());
jstring nickname = env->NewStringUTF(info.nickname.data()); jstring nickname = env->NewStringUTF(info.nickname.data());
@ -23,14 +23,14 @@ inline jobject serialize_contact(JNIEnv *env, session::config::contact_info info
approvedMe = info.approved_me; approvedMe = info.approved_me;
blocked = info.blocked; blocked = info.blocked;
jobject profilePic = util::serialize_user_pic(env, info.profile_picture); jobject profilePic = util::serialize_user_pic(env, info.profile_picture);
jobject returnObj = env->NewObject(contactClass, constructor, id, name, nickname, approved, approvedMe, blocked, profilePic); jobject returnObj = env->NewObject(contactClass, constructor, id, name, nickname, approved, approvedMe, blocked, profilePic, info.priority);
return returnObj; return returnObj;
} }
inline session::config::contact_info* deserialize_contact(JNIEnv *env, jobject info) { inline session::config::contact_info* deserialize_contact(JNIEnv *env, jobject info) {
jclass contactClass = env->FindClass("network/loki/messenger/libsession_util/util/Contact"); jclass contactClass = env->FindClass("network/loki/messenger/libsession_util/util/Contact");
jfieldID getId, getName, getNick, getApproved, getApprovedMe, getBlocked, getUserPic; jfieldID getId, getName, getNick, getApproved, getApprovedMe, getBlocked, getUserPic, getPriority;
getId = env->GetFieldID(contactClass, "id", "Ljava/lang/String;"); getId = env->GetFieldID(contactClass, "id", "Ljava/lang/String;");
getName = env->GetFieldID(contactClass, "name", "Ljava/lang/String;"); getName = env->GetFieldID(contactClass, "name", "Ljava/lang/String;");
getNick = env->GetFieldID(contactClass, "nickname", "Ljava/lang/String;"); getNick = env->GetFieldID(contactClass, "nickname", "Ljava/lang/String;");
@ -38,11 +38,13 @@ inline session::config::contact_info* deserialize_contact(JNIEnv *env, jobject i
getApprovedMe = env->GetFieldID(contactClass, "approvedMe", "Z"); getApprovedMe = env->GetFieldID(contactClass, "approvedMe", "Z");
getBlocked = env->GetFieldID(contactClass, "blocked", "Z"); getBlocked = env->GetFieldID(contactClass, "blocked", "Z");
getUserPic = env->GetFieldID(contactClass, "profilePicture", "Lnetwork/loki/messenger/libsession_util/util/UserPic;"); getUserPic = env->GetFieldID(contactClass, "profilePicture", "Lnetwork/loki/messenger/libsession_util/util/UserPic;");
getPriority = env->GetFieldID(contactClass, "priority", "I");
jstring name, nickname, session_id; jstring name, nickname, session_id;
session_id = static_cast<jstring>(env->GetObjectField(info, getId)); session_id = static_cast<jstring>(env->GetObjectField(info, getId));
name = static_cast<jstring>(env->GetObjectField(info, getName)); name = static_cast<jstring>(env->GetObjectField(info, getName));
nickname = static_cast<jstring>(env->GetObjectField(info, getNick)); nickname = static_cast<jstring>(env->GetObjectField(info, getNick));
bool approved, approvedMe, blocked; bool approved, approvedMe, blocked;
int priority = env->GetIntField(info, getPriority);
approved = env->GetBooleanField(info, getApproved); approved = env->GetBooleanField(info, getApproved);
approvedMe = env->GetBooleanField(info, getApprovedMe); approvedMe = env->GetBooleanField(info, getApprovedMe);
blocked = env->GetBooleanField(info, getBlocked); blocked = env->GetBooleanField(info, getBlocked);
@ -86,6 +88,8 @@ inline session::config::contact_info* deserialize_contact(JNIEnv *env, jobject i
env->ReleaseStringUTFChars(nickname, nickname_bytes); env->ReleaseStringUTFChars(nickname, nickname_bytes);
} }
contact_info->priority = priority;
return contact_info; return contact_info;
} }

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@ -31,8 +31,6 @@ Java_network_loki_messenger_libsession_1util_UserGroupsConfig_00024Companion_new
jmethodID constructor = env->GetMethodID(contactsClass, "<init>", "(J)V"); jmethodID constructor = env->GetMethodID(contactsClass, "<init>", "(J)V");
jobject newConfig = env->NewObject(contactsClass, constructor, reinterpret_cast<jlong>(user_groups)); jobject newConfig = env->NewObject(contactsClass, constructor, reinterpret_cast<jlong>(user_groups));
user_groups->get_or_construct_legacy_group()
return newConfig; return newConfig;
} }
#pragma clang diagnostic pop #pragma clang diagnostic pop
@ -50,7 +48,21 @@ Java_network_loki_messenger_libsession_1util_UserGroupsConfig_getCommunityInfo(J
jobject thiz, jobject thiz,
jstring base_url, jstring base_url,
jstring room) { jstring room) {
auto conf = ptrToUserGroups(env, thiz);
auto base_url_bytes = env->GetStringUTFChars(base_url, nullptr);
auto room_bytes = env->GetStringUTFChars(room, nullptr);
auto community = conf->get_community(base_url_bytes, room_bytes);
jobject community_info = nullptr;
if (community) {
serialize_legacy_group_info()
}
// TODO: implement getCommunityInfo() // TODO: implement getCommunityInfo()
env->ReleaseStringUTFChars(base_url, base_url_bytes);
env->ReleaseStringUTFChars(room, room_bytes);
} }
extern "C" extern "C"

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@ -3,6 +3,7 @@
#include "jni.h" #include "jni.h"
#include "util.h" #include "util.h"
#include "conversation.h"
#include "session/config/user_groups.hpp" #include "session/config/user_groups.hpp"
inline session::config::UserGroups* ptrToUserGroups(JNIEnv *env, jobject obj) { inline session::config::UserGroups* ptrToUserGroups(JNIEnv *env, jobject obj) {
@ -51,4 +52,11 @@ inline jobject serialize_members(JNIEnv *env, std::map<std::string, bool> member
return nullptr; return nullptr;
} }
inline jobject serialize_community_info(JNIEnv *env, session::config::community_info info) {
auto priority = info.priority;
auto open_group = session::config::community::parse_full_url(info.full_url());
auto serialized_community = serialize_open_group(env, (session::config::community) info);
return nullptr;
}
#endif //SESSION_ANDROID_USER_GROUPS_H #endif //SESSION_ANDROID_USER_GROUPS_H

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@ -34,8 +34,7 @@ sealed class ConfigBase(protected val /* yucky */ pointer: Long) {
external fun encryptionDomain(): String external fun encryptionDomain(): String
external fun confirmPushed(seqNo: Long, newHash: String) external fun confirmPushed(seqNo: Long, newHash: String)
external fun merge(toMerge: Array<Pair<String,ByteArray>>): Int external fun merge(toMerge: Array<Pair<String,ByteArray>>): Int
external fun obsoleteHashes(): List<String> external fun currentHashes(): List<String>
external fun removeObsoleteHashes(toRemove: Array<String>)
external fun configNamespace(): Int external fun configNamespace(): Int

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@ -7,5 +7,6 @@ data class Contact(
var approved: Boolean = false, var approved: Boolean = false,
var approvedMe: Boolean = false, var approvedMe: Boolean = false,
var blocked: Boolean = false, var blocked: Boolean = false,
var profilePicture: UserPic = UserPic.DEFAULT var profilePicture: UserPic = UserPic.DEFAULT,
var priority: Int
) )

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@ -57,6 +57,15 @@ data class ConfigurationSyncJob(val destination: Destination): Job {
// don't run anything if we don't need to push anything // don't run anything if we don't need to push anything
if (configsRequiringPush.isEmpty()) return delegate.handleJobSucceeded(this, dispatcherName) if (configsRequiringPush.isEmpty()) return delegate.handleJobSucceeded(this, dispatcherName)
// need to get the current hashes before we call `push()`
val toDeleteRequest = configsRequiringPush.map { base ->
// accumulate by adding together
base.currentHashes()
}.reduce(List<String>::plus).let { toDeleteFromAllNamespaces ->
if (toDeleteFromAllNamespaces.isEmpty()) null
else SnodeAPI.buildAuthenticatedDeleteBatchInfo(destination.destinationPublicKey(), toDeleteFromAllNamespaces)
}
// allow null results here so the list index matches configsRequiringPush // allow null results here so the list index matches configsRequiringPush
val batchObjects: List<Pair<SharedConfigurationMessage, SnodeAPI.SnodeBatchRequestInfo>?> = configsRequiringPush.map { config -> val batchObjects: List<Pair<SharedConfigurationMessage, SnodeAPI.SnodeBatchRequestInfo>?> = configsRequiringPush.map { config ->
val (data, seqNo) = config.push() val (data, seqNo) = config.push()
@ -72,14 +81,6 @@ data class ConfigurationSyncJob(val destination: Destination): Job {
message to authenticated // to keep track of seqNo for calling confirmPushed later message to authenticated // to keep track of seqNo for calling confirmPushed later
} }
val toDeleteRequest = configsRequiringPush.map { base ->
base.obsoleteHashes()
// accumulate by adding together
}.reduce(List<String>::plus).let { toDeleteFromAllNamespaces ->
if (toDeleteFromAllNamespaces.isEmpty()) null
else SnodeAPI.buildAuthenticatedDeleteBatchInfo(destination.destinationPublicKey(), toDeleteFromAllNamespaces)
}
if (batchObjects.any { it == null }) { if (batchObjects.any { it == null }) {
// stop running here, something like a signing error occurred // stop running here, something like a signing error occurred
return delegate.handleJobFailedPermanently(this, dispatcherName, NullPointerException("One or more requests had a null batch request info")) return delegate.handleJobFailedPermanently(this, dispatcherName, NullPointerException("One or more requests had a null batch request info"))
@ -137,8 +138,6 @@ data class ConfigurationSyncJob(val destination: Destination): Job {
// confirm pushed seqno // confirm pushed seqno
val thisSeqNo = toPushMessage.seqNo val thisSeqNo = toPushMessage.seqNo
config.confirmPushed(thisSeqNo, insertHash) config.confirmPushed(thisSeqNo, insertHash)
// wipe any of the existing hashes which we deleted (they may or may not be in this namespace)
config.removeObsoleteHashes(deletedHashes.toTypedArray())
Log.d(TAG, "Successfully removed the deleted hashes from ${config.javaClass.simpleName}") Log.d(TAG, "Successfully removed the deleted hashes from ${config.javaClass.simpleName}")
// dump and write config after successful // dump and write config after successful
if (config.needsDump()) { // usually this will be true? if (config.needsDump()) { // usually this will be true?

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@ -137,7 +137,7 @@ class Poller(private val configFactory: ConfigFactoryProtocol, debounceTimer: Ti
namespace, namespace,
updateLatestHash = false, updateLatestHash = false,
updateStoredHashes = false, updateStoredHashes = false,
).filter { (_, hash) -> !forConfigObject.obsoleteHashes().contains(hash) } ).filter { (_, hash) -> !forConfigObject.currentHashes().contains(hash) }
if (messages.isEmpty()) { if (messages.isEmpty()) {
// no new messages to process // no new messages to process