Extract login into GroupManagerV2
SessionHero01
8 months ago
parent
32f95337d5
commit
80e3e563ce
@ -0,0 +1,464 @@
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package org.thoughtcrime.securesms.groups
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import android.content.Context
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import com.google.protobuf.ByteString
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import dagger.hilt.android.qualifiers.ApplicationContext
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import network.loki.messenger.libsession_util.util.INVITE_STATUS_SENT
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import network.loki.messenger.libsession_util.util.Sodium
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import network.loki.messenger.libsession_util.util.UserPic
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import org.session.libsession.database.StorageProtocol
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import org.session.libsession.messaging.contacts.Contact
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import org.session.libsession.messaging.groups.GroupManagerV2
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import org.session.libsession.messaging.jobs.ConfigurationSyncJob.Companion.messageInformation
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import org.session.libsession.messaging.jobs.InviteContactsJob
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import org.session.libsession.messaging.jobs.JobQueue
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import org.session.libsession.messaging.messages.Destination
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import org.session.libsession.messaging.messages.control.GroupUpdated
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import org.session.libsession.messaging.sending_receiving.MessageSender
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import org.session.libsession.messaging.utilities.MessageAuthentication.buildDeleteMemberContentSignature
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import org.session.libsession.messaging.utilities.MessageAuthentication.buildMemberChangeSignature
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import org.session.libsession.messaging.utilities.SodiumUtilities
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import org.session.libsession.snode.OwnedSwarmAuth
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import org.session.libsession.snode.SnodeAPI
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import org.session.libsession.snode.SnodeMessage
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import org.session.libsession.snode.model.BatchResponse
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import org.session.libsession.snode.utilities.await
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import org.session.libsession.utilities.Address
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import org.session.libsession.utilities.withGroupConfigsOrNull
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import org.session.libsignal.protos.SignalServiceProtos.DataMessage
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import org.session.libsignal.protos.SignalServiceProtos.DataMessage.GroupUpdateDeleteMemberContentMessage
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import org.session.libsignal.protos.SignalServiceProtos.DataMessage.GroupUpdateMemberChangeMessage
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import org.session.libsignal.protos.SignalServiceProtos.DataMessage.GroupUpdateMessage
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import org.session.libsignal.utilities.AccountId
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import org.session.libsignal.utilities.Base64
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import org.session.libsignal.utilities.Namespace
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import org.thoughtcrime.securesms.database.LokiMessageDatabase
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import org.thoughtcrime.securesms.database.MmsSmsDatabase
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import org.thoughtcrime.securesms.dependencies.ConfigFactory
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import org.thoughtcrime.securesms.dependencies.PollerFactory
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import org.thoughtcrime.securesms.util.ConfigurationMessageUtilities
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import javax.inject.Inject
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import javax.inject.Singleton
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@Singleton
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class GroupManagerV2Impl @Inject constructor(
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val storage: StorageProtocol,
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val configFactory: ConfigFactory,
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val mmsSmsDatabase: MmsSmsDatabase,
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val lokiDatabase: LokiMessageDatabase,
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val pollerFactory: PollerFactory,
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@ApplicationContext val application: Context,
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) : GroupManagerV2 {
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/**
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* Require admin access to a group, and return the admin key.
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*
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* @throws IllegalArgumentException if the group does not exist or no admin key is found.
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*/
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private fun requireAdminAccess(group: AccountId): ByteArray {
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return checkNotNull(configFactory
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.userGroups
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?.getClosedGroup(group.hexString)
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?.adminKey
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?.takeIf { it.isNotEmpty() }) { "Only admin is allowed to invite members" }
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}
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override suspend fun inviteMembers(
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group: AccountId,
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newMembers: List<AccountId>,
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shareHistory: Boolean
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) {
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val adminKey = requireAdminAccess(group)
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val groupAuth = OwnedSwarmAuth.ofClosedGroup(group, adminKey)
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configFactory.withGroupConfigsOrNull(group) { infoConfig, membersConfig, keysConfig ->
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// Construct the new members in the config
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for (newMember in newMembers) {
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val toSet = membersConfig.get(newMember.hexString)
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?.let { existing ->
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if (existing.inviteFailed || existing.invitePending) {
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existing.copy(inviteStatus = INVITE_STATUS_SENT, supplement = shareHistory)
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} else {
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existing
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}
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}
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?: membersConfig.getOrConstruct(newMember.hexString).let {
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val contact = storage.getContactWithAccountID(newMember.hexString)
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it.copy(
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name = contact?.name,
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profilePicture = contact?.profilePicture ?: UserPic.DEFAULT,
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inviteStatus = INVITE_STATUS_SENT,
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supplement = shareHistory
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)
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}
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membersConfig.set(toSet)
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}
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// Persist the member change to the db now for the UI to reflect the status change
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val timestamp = SnodeAPI.nowWithOffset
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configFactory.persistGroupConfigDump(membersConfig, group, timestamp)
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val batchRequests = mutableListOf<SnodeAPI.SnodeBatchRequestInfo>()
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val messagesToDelete = mutableListOf<String>() // List of message hashes
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// Depends on whether we want to share history, we may need to rekey or just adding supplement keys
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if (shareHistory) {
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for (member in newMembers) {
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val memberKey = keysConfig.supplementFor(member.hexString)
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batchRequests.add(SnodeAPI.buildAuthenticatedStoreBatchInfo(
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namespace = keysConfig.namespace(),
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message = SnodeMessage(
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recipient = group.hexString,
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data = Base64.encodeBytes(memberKey),
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ttl = SnodeMessage.CONFIG_TTL,
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timestamp = timestamp
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),
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auth = groupAuth,
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))
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}
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} else {
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keysConfig.rekey(infoConfig, membersConfig)
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}
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// Call un-revocate API on new members, in case they have been removed before
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batchRequests += SnodeAPI.buildAuthenticatedUnrevokeSubKeyBatchRequest(
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groupAdminAuth = groupAuth,
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subAccountTokens = newMembers.map(keysConfig::getSubAccountToken)
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)
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keysConfig.messageInformation(groupAuth)?.let {
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batchRequests += it.batch
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}
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batchRequests += infoConfig.messageInformation(messagesToDelete, groupAuth).batch
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batchRequests += membersConfig.messageInformation(messagesToDelete, groupAuth).batch
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if (messagesToDelete.isNotEmpty()) {
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batchRequests += SnodeAPI.buildAuthenticatedDeleteBatchInfo(
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auth = groupAuth,
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messageHashes = messagesToDelete
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)
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}
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// Call the API
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val swarmNode = SnodeAPI.getSingleTargetSnode(group.hexString).await()
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val response = SnodeAPI.getBatchResponse(swarmNode, group.hexString, batchRequests)
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// Make sure every request is successful
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response.requireAllRequestsSuccessful("Failed to invite members")
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// Persist the keys config
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configFactory.saveGroupConfigs(keysConfig, infoConfig, membersConfig)
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// Send the invitation message to the new members
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JobQueue.shared.add(InviteContactsJob(group.hexString, newMembers.map { it.hexString }.toTypedArray()))
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// Send a member change message to the group
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val signature = SodiumUtilities.sign(
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buildMemberChangeSignature(GroupUpdateMemberChangeMessage.Type.ADDED, timestamp),
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adminKey
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)
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val updatedMessage = GroupUpdated(
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GroupUpdateMessage.newBuilder()
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.setMemberChangeMessage(
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GroupUpdateMemberChangeMessage.newBuilder()
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.addAllMemberSessionIds(newMembers.map { it.hexString })
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.setType(GroupUpdateMemberChangeMessage.Type.ADDED)
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.setAdminSignature(ByteString.copyFrom(signature))
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)
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.build()
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).apply { this.sentTimestamp = timestamp }
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MessageSender.send(updatedMessage, Address.fromSerialized(group.hexString))
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storage.insertGroupInfoChange(updatedMessage, group)
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group
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}
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}
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override suspend fun removeMembers(
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groupAccountId: AccountId,
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removedMembers: List<AccountId>,
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removeMessages: Boolean
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) {
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doRemoveMembers(
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group = groupAccountId,
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removedMembers = removedMembers,
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sendRemovedMessage = true,
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removeMemberMessages = removeMessages
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)
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}
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override suspend fun handleMemberLeft(message: GroupUpdated, closedGroupId: AccountId) {
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val userGroups = configFactory.userGroups ?: return
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val closedGroupHexString = closedGroupId.hexString
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val closedGroup = userGroups.getClosedGroup(closedGroupId.hexString) ?: return
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if (closedGroup.hasAdminKey()) {
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// re-key and do a new config removing the previous member
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doRemoveMembers(
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closedGroupId,
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listOf(AccountId(message.sender!!)),
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sendRemovedMessage = false,
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removeMemberMessages = false
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)
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} else {
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configFactory.getGroupMemberConfig(closedGroupId)?.use { memberConfig ->
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// if the leaving member is an admin, disable the group and remove it
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// This is just to emulate the "existing" group behaviour, this will need to be removed in future
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if (memberConfig.get(message.sender!!)?.admin == true) {
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pollerFactory.pollerFor(closedGroupId)?.stop()
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storage.getThreadId(Address.fromSerialized(closedGroupHexString))
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?.let(storage::deleteConversation)
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configFactory.removeGroup(closedGroupId)
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}
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}
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}
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}
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override suspend fun leaveGroup(group: AccountId, deleteOnLeave: Boolean) {
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val canSendGroupMessage = configFactory.userGroups?.getClosedGroup(group.hexString)?.kicked != true
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val address = Address.fromSerialized(group.hexString)
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if (canSendGroupMessage) {
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MessageSender.sendNonDurably(
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message = GroupUpdated(
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GroupUpdateMessage.newBuilder()
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.setMemberLeftMessage(DataMessage.GroupUpdateMemberLeftMessage.getDefaultInstance())
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.build()
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),
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address = address,
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isSyncMessage = false
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).await()
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MessageSender.sendNonDurably(
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message = GroupUpdated(
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GroupUpdateMessage.newBuilder()
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.setMemberLeftNotificationMessage(DataMessage.GroupUpdateMemberLeftNotificationMessage.getDefaultInstance())
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.build()
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),
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address = address,
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isSyncMessage = false
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).await()
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}
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pollerFactory.pollerFor(group)?.stop()
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// TODO: set "deleted" and post to -10 group namespace?
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if (deleteOnLeave) {
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storage.getThreadId(address)?.let(storage::deleteConversation)
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configFactory.removeGroup(group)
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ConfigurationMessageUtilities.forceSyncConfigurationNowIfNeeded(application)
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}
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}
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override suspend fun promoteMember(group: AccountId, members: List<AccountId>) {
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val adminKey = requireAdminAccess(group)
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configFactory.withGroupConfigsOrNull(group) { info, membersConfig, keys ->
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for (member in members) {
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val promoted = membersConfig.get(member.hexString)?.setPromoteSent() ?: continue
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membersConfig.set(promoted)
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val message = GroupUpdated(
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GroupUpdateMessage.newBuilder()
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.setPromoteMessage(
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DataMessage.GroupUpdatePromoteMessage.newBuilder()
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.setGroupIdentitySeed(ByteString.copyFrom(adminKey))
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.setName(info.getName())
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)
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.build()
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)
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MessageSender.send(message, Address.fromSerialized(group.hexString))
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}
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configFactory.saveGroupConfigs(keys, info, membersConfig)
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}
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val groupDestination = Destination.ClosedGroup(group.hexString)
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ConfigurationMessageUtilities.forceSyncConfigurationNowIfNeeded(groupDestination)
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val timestamp = SnodeAPI.nowWithOffset
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val signature = SodiumUtilities.sign(
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buildMemberChangeSignature(GroupUpdateMemberChangeMessage.Type.PROMOTED, timestamp),
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adminKey
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)
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val message = GroupUpdated(
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GroupUpdateMessage.newBuilder()
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.setMemberChangeMessage(
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GroupUpdateMemberChangeMessage.newBuilder()
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.addAllMemberSessionIds(members.map { it.hexString })
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.setType(GroupUpdateMemberChangeMessage.Type.PROMOTED)
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.setAdminSignature(ByteString.copyFrom(signature))
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)
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.build()
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).apply {
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sentTimestamp = timestamp
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}
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MessageSender.send(message, Address.fromSerialized(groupDestination.publicKey))
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storage.insertGroupInfoChange(message, group)
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}
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private suspend fun doRemoveMembers(group: AccountId,
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removedMembers: List<AccountId>,
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sendRemovedMessage: Boolean,
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removeMemberMessages: Boolean) {
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val adminKey = requireAdminAccess(group)
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val groupAuth = OwnedSwarmAuth.ofClosedGroup(group, adminKey)
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configFactory.withGroupConfigsOrNull(group) { info, members, keys ->
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// To remove a member from a group, we need to first:
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// 1. Notify the swarm that this member's key has bene revoked
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// 2. Send a "kicked" message to a special namespace that the kicked member can still read
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// 3. Optionally, send "delete member messages" to the group. (So that every device in the group
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// delete this member's messages locally.)
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// These three steps will be included in a sequential call as they all need to be done in order.
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// After these steps are all done, we will do the following:
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// Update the group configs to remove the member, sync if needed, then
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// delete the member's messages locally and remotely.
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val messageSendTimestamp = SnodeAPI.nowWithOffset
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val essentialRequests = buildList {
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this += SnodeAPI.buildAuthenticatedRevokeSubKeyBatchRequest(
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groupAdminAuth = groupAuth,
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subAccountTokens = removedMembers.map(keys::getSubAccountToken)
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)
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this += Sodium.encryptForMultipleSimple(
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messages = removedMembers.map{"${it.hexString}-${keys.currentGeneration()}".encodeToByteArray()}.toTypedArray(),
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recipients = removedMembers.map { it.pubKeyBytes }.toTypedArray(),
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ed25519SecretKey = adminKey,
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domain = Sodium.KICKED_DOMAIN
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).let { encryptedForMembers ->
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SnodeAPI.buildAuthenticatedStoreBatchInfo(
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namespace = Namespace.REVOKED_GROUP_MESSAGES(),
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message = SnodeMessage(
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recipient = group.hexString,
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data = Base64.encodeBytes(encryptedForMembers),
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ttl = SnodeMessage.CONFIG_TTL,
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timestamp = messageSendTimestamp
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),
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auth = groupAuth
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)
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}
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if (removeMemberMessages) {
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val adminSignature =
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SodiumUtilities.sign(
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buildDeleteMemberContentSignature(
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memberIds = removedMembers,
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messageHashes = emptyList(),
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timestamp = messageSendTimestamp
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), adminKey)
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this += SnodeAPI.buildAuthenticatedStoreBatchInfo(
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namespace = Namespace.CLOSED_GROUP_MESSAGES(),
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message = MessageSender.buildWrappedMessageToSnode(
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destination = Destination.ClosedGroup(group.hexString),
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message = GroupUpdated(GroupUpdateMessage.newBuilder()
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.setDeleteMemberContent(
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GroupUpdateDeleteMemberContentMessage.newBuilder()
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.addAllMemberSessionIds(removedMembers.map { it.hexString })
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.setAdminSignature(ByteString.copyFrom(adminSignature))
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)
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.build()
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).apply { sentTimestamp = messageSendTimestamp },
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isSyncMessage = false
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),
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auth = groupAuth
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)
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}
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}
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val snode = SnodeAPI.getSingleTargetSnode(group.hexString).await()
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||||||
|
val responses = SnodeAPI.getBatchResponse(snode, group.hexString, essentialRequests, sequence = true)
|
||||||
|
|
||||||
|
responses.requireAllRequestsSuccessful("Failed to execute essential steps for removing member")
|
||||||
|
|
||||||
|
// Next step: update group configs, rekey, remove member messages if required
|
||||||
|
val messagesToDelete = mutableListOf<String>()
|
||||||
|
for (member in removedMembers) {
|
||||||
|
members.erase(member.hexString)
|
||||||
|
}
|
||||||
|
|
||||||
|
keys.rekey(info, members)
|
||||||
|
|
||||||
|
if (removeMemberMessages) {
|
||||||
|
val threadId = storage.getThreadId(Address.fromSerialized(group.hexString))
|
||||||
|
if (threadId != null) {
|
||||||
|
for (member in removedMembers) {
|
||||||
|
for (msg in mmsSmsDatabase.getUserMessages(threadId, member.hexString)) {
|
||||||
|
val serverHash = lokiDatabase.getMessageServerHash(msg.id, msg.isMms)
|
||||||
|
if (serverHash != null) {
|
||||||
|
messagesToDelete.add(serverHash)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
storage.deleteMessagesByUser(threadId, member.hexString)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
val requests = buildList {
|
||||||
|
keys.messageInformation(groupAuth)?.let {
|
||||||
|
this += "Sync keys config messages" to it.batch
|
||||||
|
}
|
||||||
|
|
||||||
|
this += "Sync info config messages" to info.messageInformation(messagesToDelete, groupAuth).batch
|
||||||
|
this += "Sync member config messages" to members.messageInformation(messagesToDelete, groupAuth).batch
|
||||||
|
this += "Delete outdated config and member messages" to SnodeAPI.buildAuthenticatedDeleteBatchInfo(groupAuth, messagesToDelete)
|
||||||
|
}
|
||||||
|
|
||||||
|
val response = SnodeAPI.getBatchResponse(
|
||||||
|
snode = snode,
|
||||||
|
publicKey = group.hexString,
|
||||||
|
requests = requests.map { it.second }
|
||||||
|
)
|
||||||
|
|
||||||
|
response.requireAllRequestsSuccessful("Failed to remove members")
|
||||||
|
|
||||||
|
// Persist the changes
|
||||||
|
configFactory.saveGroupConfigs(keys, info, members)
|
||||||
|
|
||||||
|
if (sendRemovedMessage) {
|
||||||
|
val timestamp = messageSendTimestamp
|
||||||
|
val signature = SodiumUtilities.sign(
|
||||||
|
buildMemberChangeSignature(GroupUpdateMemberChangeMessage.Type.REMOVED, timestamp),
|
||||||
|
adminKey
|
||||||
|
)
|
||||||
|
|
||||||
|
val updateMessage = GroupUpdateMessage.newBuilder()
|
||||||
|
.setMemberChangeMessage(
|
||||||
|
GroupUpdateMemberChangeMessage.newBuilder()
|
||||||
|
.addAllMemberSessionIds(removedMembers.map { it.hexString })
|
||||||
|
.setType(GroupUpdateMemberChangeMessage.Type.REMOVED)
|
||||||
|
.setAdminSignature(ByteString.copyFrom(signature))
|
||||||
|
)
|
||||||
|
.build()
|
||||||
|
val message = GroupUpdated(
|
||||||
|
updateMessage
|
||||||
|
).apply { sentTimestamp = timestamp }
|
||||||
|
MessageSender.send(message, Destination.ClosedGroup(group.hexString), false)
|
||||||
|
storage.insertGroupInfoChange(message, group)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
ConfigurationMessageUtilities.forceSyncConfigurationNowIfNeeded(
|
||||||
|
Destination.ClosedGroup(group.hexString)
|
||||||
|
)
|
||||||
|
}
|
||||||
|
|
||||||
|
private fun BatchResponse.requireAllRequestsSuccessful(errorMessage: String) {
|
||||||
|
val firstError = this.results.firstOrNull { it.code != 200 }
|
||||||
|
require(firstError == null) { "$errorMessage: ${firstError!!.body}" }
|
||||||
|
}
|
||||||
|
|
||||||
|
private val Contact.profilePicture: UserPic? get() {
|
||||||
|
val url = this.profilePictureURL
|
||||||
|
val key = this.profilePictureEncryptionKey
|
||||||
|
return if (url != null && key != null) {
|
||||||
|
UserPic(url, key)
|
||||||
|
} else {
|
||||||
|
null
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
@ -1 +1 @@
|
|||||||
Subproject commit 0193c36e0dad461385d6407a00f33b7314e6d740
|
Subproject commit 995e22dcbf08b3cb9e2ad595859e4cd9a4ed8776
|
||||||
@ -0,0 +1,28 @@
|
|||||||
|
package org.session.libsession.messaging.groups
|
||||||
|
|
||||||
|
import org.session.libsession.messaging.messages.control.GroupUpdated
|
||||||
|
import org.session.libsignal.utilities.AccountId
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Business logic handling group v2 operations like inviting members,
|
||||||
|
* removing members, promoting members, leaving groups, etc.
|
||||||
|
*/
|
||||||
|
interface GroupManagerV2 {
|
||||||
|
suspend fun inviteMembers(
|
||||||
|
group: AccountId,
|
||||||
|
newMembers: List<AccountId>,
|
||||||
|
shareHistory: Boolean
|
||||||
|
)
|
||||||
|
|
||||||
|
suspend fun removeMembers(
|
||||||
|
groupAccountId: AccountId,
|
||||||
|
removedMembers: List<AccountId>,
|
||||||
|
removeMessages: Boolean
|
||||||
|
)
|
||||||
|
|
||||||
|
suspend fun handleMemberLeft(message: GroupUpdated, closedGroupId: AccountId)
|
||||||
|
|
||||||
|
suspend fun leaveGroup(group: AccountId, deleteOnLeave: Boolean)
|
||||||
|
|
||||||
|
suspend fun promoteMember(group: AccountId, members: List<AccountId>)
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue