241 lines
11 KiB
Kotlin
241 lines
11 KiB
Kotlin
package org.thoughtcrime.securesms.service
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import android.content.Context
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import network.loki.messenger.libsession_util.util.ExpiryMode
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import network.loki.messenger.libsession_util.util.ExpiryMode.AfterSend
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import org.session.libsession.messaging.MessagingModuleConfiguration.Companion.shared
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import org.session.libsession.messaging.messages.control.ExpirationTimerUpdate
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import org.session.libsession.messaging.messages.signal.IncomingMediaMessage
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import org.session.libsession.messaging.messages.signal.OutgoingExpirationUpdateMessage
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import org.session.libsession.snode.SnodeAPI.nowWithOffset
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import org.session.libsession.utilities.Address
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import org.session.libsession.utilities.Address.Companion.fromSerialized
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import org.session.libsession.utilities.GroupUtil.doubleEncodeGroupID
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import org.session.libsession.utilities.GroupUtil.getDecodedGroupIDAsData
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import org.session.libsession.utilities.SSKEnvironment.MessageExpirationManagerProtocol
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import org.session.libsession.utilities.TextSecurePreferences.Companion.getLocalNumber
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import org.session.libsession.utilities.recipients.Recipient
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import org.session.libsignal.messages.SignalServiceGroup
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import org.session.libsignal.utilities.Log
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import org.session.libsignal.utilities.guava.Optional
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import org.thoughtcrime.securesms.database.MmsDatabase
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import org.thoughtcrime.securesms.database.MmsSmsDatabase
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import org.thoughtcrime.securesms.database.SmsDatabase
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import org.thoughtcrime.securesms.database.model.MessageRecord
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import org.thoughtcrime.securesms.dependencies.DatabaseComponent.Companion.get
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import org.thoughtcrime.securesms.mms.MmsException
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import java.io.IOException
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import java.util.TreeSet
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import java.util.concurrent.Executor
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import java.util.concurrent.Executors
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private val TAG = ExpiringMessageManager::class.java.simpleName
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class ExpiringMessageManager(context: Context) : MessageExpirationManagerProtocol {
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private val expiringMessageReferences = TreeSet<ExpiringMessageReference>()
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private val executor: Executor = Executors.newSingleThreadExecutor()
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private val smsDatabase: SmsDatabase
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private val mmsDatabase: MmsDatabase
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private val mmsSmsDatabase: MmsSmsDatabase
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private val context: Context
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init {
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this.context = context.applicationContext
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smsDatabase = get(context).smsDatabase()
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mmsDatabase = get(context).mmsDatabase()
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mmsSmsDatabase = get(context).mmsSmsDatabase()
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executor.execute(LoadTask())
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executor.execute(ProcessTask())
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}
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private fun getDatabase(mms: Boolean) = if (mms) mmsDatabase else smsDatabase
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fun scheduleDeletion(id: Long, mms: Boolean, startedAtTimestamp: Long, expiresInMillis: Long) {
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Log.d(TAG, "scheduleDeletion() called with: id = $id, mms = $mms, startedAtTimestamp = $startedAtTimestamp, expiresInMillis = $expiresInMillis")
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val expiresAtMillis = startedAtTimestamp + expiresInMillis
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synchronized(expiringMessageReferences) {
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expiringMessageReferences.add(ExpiringMessageReference(id, mms, expiresAtMillis))
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(expiringMessageReferences as Object).notifyAll()
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}
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}
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fun checkSchedule() {
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synchronized(expiringMessageReferences) { (expiringMessageReferences as Object).notifyAll() }
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}
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override fun setExpirationTimer(message: ExpirationTimerUpdate, expiryMode: ExpiryMode?) {
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Log.d(TAG, "setExpirationTimer() called with: message = $message, expiryMode = $expiryMode")
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val userPublicKey = getLocalNumber(context)
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val senderPublicKey = message.sender
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val sentTimestamp = if (message.sentTimestamp == null) 0 else message.sentTimestamp!!
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val expireStartedAt =
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if (expiryMode is AfterSend || message.isSenderSelf) sentTimestamp else 0
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// Notify the user
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if (senderPublicKey == null || userPublicKey == senderPublicKey) {
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// sender is self or a linked device
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insertOutgoingExpirationTimerMessage(message, expireStartedAt)
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} else {
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insertIncomingExpirationTimerMessage(message, expireStartedAt)
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}
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if (expiryMode!!.expirySeconds > 0 && message.sentTimestamp != null && senderPublicKey != null) {
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startAnyExpiration(message.sentTimestamp!!, senderPublicKey, expireStartedAt)
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}
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}
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private fun insertIncomingExpirationTimerMessage(
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message: ExpirationTimerUpdate,
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expireStartedAt: Long
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) {
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Log.d(TAG, "insertIncomingExpirationTimerMessage() called with: message = $message, expireStartedAt = $expireStartedAt")
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val senderPublicKey = message.sender
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val sentTimestamp = message.sentTimestamp
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val groupId = message.groupPublicKey
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val expiresInMillis = message.expiryMode.expiryMillis
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var groupInfo = Optional.absent<SignalServiceGroup?>()
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val address = fromSerialized(
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senderPublicKey!!
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)
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var recipient = Recipient.from(context, address, false)
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// if the sender is blocked, we don't display the update, except if it's in a closed group
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if (recipient.isBlocked && groupId == null) return
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try {
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if (groupId != null) {
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val groupID = doubleEncodeGroupID(groupId)
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groupInfo = Optional.of(
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SignalServiceGroup(
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getDecodedGroupIDAsData(groupID),
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SignalServiceGroup.GroupType.SIGNAL
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)
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)
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val groupAddress = fromSerialized(groupID)
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recipient = Recipient.from(context, groupAddress, false)
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}
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val threadId = shared.storage.getThreadId(recipient) ?: return
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val mediaMessage = IncomingMediaMessage(
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address, sentTimestamp!!, -1,
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expiresInMillis, expireStartedAt, true,
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false,
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false,
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false,
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Optional.absent(),
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groupInfo,
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Optional.absent(),
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Optional.absent(),
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Optional.absent(),
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Optional.absent(),
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Optional.absent()
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)
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//insert the timer update message
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mmsDatabase.insertSecureDecryptedMessageInbox(mediaMessage, threadId, runThreadUpdate = true)
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} catch (ioe: IOException) {
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Log.e("Loki", "Failed to insert expiration update message.")
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} catch (ioe: MmsException) {
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Log.e("Loki", "Failed to insert expiration update message.")
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}
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}
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private fun insertOutgoingExpirationTimerMessage(
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message: ExpirationTimerUpdate,
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expireStartedAt: Long
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) {
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Log.d(TAG, "insertOutgoingExpirationTimerMessage() called with: message = $message, expireStartedAt = $expireStartedAt")
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val sentTimestamp = message.sentTimestamp
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val groupId = message.groupPublicKey
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val duration = message.expiryMode.expiryMillis
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val address: Address
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try {
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address = if (groupId != null) {
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fromSerialized(doubleEncodeGroupID(groupId))
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} else {
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fromSerialized((if (message.syncTarget != null && !message.syncTarget!!.isEmpty()) message.syncTarget else message.recipient)!!)
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}
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val recipient = Recipient.from(context, address, false)
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val storage = shared.storage
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message.threadID = storage.getOrCreateThreadIdFor(address)
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val timerUpdateMessage = OutgoingExpirationUpdateMessage(
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recipient,
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sentTimestamp!!,
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duration,
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expireStartedAt,
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groupId
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)
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mmsDatabase.insertSecureDecryptedMessageOutbox(
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timerUpdateMessage,
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message.threadID!!,
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sentTimestamp,
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true
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)
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} catch (ioe: MmsException) {
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Log.e("Loki", "Failed to insert expiration update message.", ioe)
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} catch (ioe: IOException) {
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Log.e("Loki", "Failed to insert expiration update message.", ioe)
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}
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}
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override fun startAnyExpiration(timestamp: Long, author: String, expireStartedAt: Long) {
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Log.d(TAG, "startAnyExpiration() called with: timestamp = $timestamp, author = $author, expireStartedAt = $expireStartedAt")
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val messageRecord = mmsSmsDatabase.getMessageFor(timestamp, author) ?: return
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val mms = messageRecord.isMms()
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val config = get(context).storage().getExpirationConfiguration(messageRecord.threadId)
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if (config == null || !config.isEnabled) return
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val mode = config.expiryMode
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getDatabase(mms).markExpireStarted(messageRecord.getId(), expireStartedAt)
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scheduleDeletion(messageRecord.getId(), mms, expireStartedAt, mode?.expiryMillis ?: 0)
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}
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private inner class LoadTask : Runnable {
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override fun run() {
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val smsReader = smsDatabase.readerFor(smsDatabase.getExpirationStartedMessages())
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val mmsReader = mmsDatabase.expireStartedMessages
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val smsMessages = smsReader.use { generateSequence { it.next }.toList() }
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val mmsMessages = mmsReader.use { generateSequence { it.next }.toList() }
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(smsMessages + mmsMessages).forEach { messageRecord ->
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expiringMessageReferences.add(
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ExpiringMessageReference(
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messageRecord.getId(),
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messageRecord.isMms,
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messageRecord.expireStarted + messageRecord.expiresIn
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)
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)
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}
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}
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}
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private inner class ProcessTask : Runnable {
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override fun run() {
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while (true) {
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synchronized(expiringMessageReferences) {
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try {
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while (expiringMessageReferences.isEmpty()) (expiringMessageReferences as Object).wait()
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val nextReference = expiringMessageReferences.first()
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val waitTime = nextReference.expiresAtMillis - nowWithOffset
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if (waitTime > 0) {
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ExpirationListener.setAlarm(context, waitTime)
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(expiringMessageReferences as Object).wait(waitTime)
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null
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} else {
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expiringMessageReferences.remove(nextReference)
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nextReference
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}
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} catch (e: InterruptedException) {
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Log.w(TAG, e)
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null
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}
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}?.run { getDatabase(mms).deleteMessage(id) }
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}
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}
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}
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private data class ExpiringMessageReference(
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val id: Long,
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val mms: Boolean,
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val expiresAtMillis: Long
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): Comparable<ExpiringMessageReference> {
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override fun compareTo(other: ExpiringMessageReference) = compareValuesBy(this, other, { it.id }, { it.mms }, { it.expiresAtMillis})
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}
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}
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