configuration message
Ryan ZHAO
3 years ago
parent
e4a1de24f5
commit
03ff1d1941
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package org.thoughtcrime.securesms.loki.protocol
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import android.content.Context
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import org.session.libsession.messaging.messages.control.ConfigurationMessage
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import org.session.libsession.utilities.TextSecurePreferences
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import org.session.libsignal.service.api.push.SignalServiceAddress
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import org.session.libsignal.utilities.logging.Log
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import org.thoughtcrime.securesms.ApplicationContext
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import org.thoughtcrime.securesms.crypto.UnidentifiedAccessUtil
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import org.thoughtcrime.securesms.loki.utilities.recipient
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import java.util.*
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object MultiDeviceProtocol {
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@JvmStatic
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fun syncConfigurationIfNeeded(context: Context) {
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val userPublicKey = TextSecurePreferences.getLocalNumber(context)!!
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val lastSyncTime = TextSecurePreferences.getLastConfigurationSyncTime(context)
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val now = System.currentTimeMillis()
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if (now - lastSyncTime < 2 * 24 * 60 * 60 * 1000) return
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val configurationMessage = ConfigurationMessage.getCurrent()
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val serializedMessage = configurationMessage.toProto()!!.toByteArray()
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val messageSender = ApplicationContext.getInstance(context).communicationModule.provideSignalMessageSender()
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val address = SignalServiceAddress(userPublicKey)
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val recipient = recipient(context, userPublicKey)
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val udAccess = UnidentifiedAccessUtil.getAccessFor(context, recipient)
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try {
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messageSender.sendMessage(0, address, udAccess.get().targetUnidentifiedAccess,
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Date().time, serializedMessage, false, configurationMessage.ttl.toInt(), false,
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true, false, true, false)
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TextSecurePreferences.setLastConfigurationSyncTime(context, now)
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} catch (e: Exception) {
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Log.d("Loki", "Failed to send configuration message due to error: $e.")
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}
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}
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fun forceSyncConfigurationNowIfNeeded(context: Context) {
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val userPublicKey = TextSecurePreferences.getLocalNumber(context)!!
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val configurationMessage = ConfigurationMessage.getCurrent()
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val serializedMessage = configurationMessage.toProto()!!.toByteArray()
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val messageSender = ApplicationContext.getInstance(context).communicationModule.provideSignalMessageSender()
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val address = SignalServiceAddress(userPublicKey)
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val recipient = recipient(context, userPublicKey)
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val udAccess = UnidentifiedAccessUtil.getAccessFor(context, recipient)
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try {
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messageSender.sendMessage(0, address, udAccess.get().targetUnidentifiedAccess,
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Date().time, serializedMessage, false, configurationMessage.ttl.toInt(), false,
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true, false, true, false)
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} catch (e: Exception) {
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Log.d("Loki", "Failed to send configuration message due to error: $e.")
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}
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}
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}
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@ -0,0 +1,105 @@
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package org.session.libsession.messaging.messages.control
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import com.google.protobuf.ByteString
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import org.session.libsession.messaging.MessagingConfiguration
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import org.session.libsession.messaging.threads.Address
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import org.session.libsession.utilities.GroupUtil
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import org.session.libsignal.libsignal.ecc.DjbECPrivateKey
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import org.session.libsignal.libsignal.ecc.DjbECPublicKey
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import org.session.libsignal.libsignal.ecc.ECKeyPair
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import org.session.libsignal.service.internal.push.SignalServiceProtos
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import org.session.libsignal.service.loki.utilities.removing05PrefixIfNeeded
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import org.session.libsignal.service.loki.utilities.toHexString
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class ConfigurationMessage(val closedGroups: List<ClosedGroup>, val openGroups: List<String>): ControlMessage() {
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class ClosedGroup(val publicKey: String, val name: String, val encryptionKeyPair: ECKeyPair, val members: List<String>, val admins: List<String>) {
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val isValid: Boolean get() = members.isNotEmpty() && admins.isNotEmpty()
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override fun toString(): String {
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return name
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}
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companion object {
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fun fromProto(proto: SignalServiceProtos.ConfigurationMessage.ClosedGroup): ClosedGroup? {
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if (!proto.hasPublicKey() || !proto.hasName() || !proto.hasEncryptionKeyPair()) return null
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val publicKey = proto.publicKey.toByteArray().toHexString()
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val name = proto.name
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val encryptionKeyPairAsProto = proto.encryptionKeyPair
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val encryptionKeyPair = ECKeyPair(DjbECPublicKey(encryptionKeyPairAsProto.publicKey.toByteArray().removing05PrefixIfNeeded()),
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DjbECPrivateKey(encryptionKeyPairAsProto.privateKey.toByteArray()))
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val members = proto.membersList.map { it.toByteArray().toHexString() }
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val admins = proto.adminsList.map { it.toByteArray().toHexString() }
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return ClosedGroup(publicKey, name, encryptionKeyPair, members, admins)
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}
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}
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fun toProto(): SignalServiceProtos.ConfigurationMessage.ClosedGroup? {
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val result = SignalServiceProtos.ConfigurationMessage.ClosedGroup.newBuilder()
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result.publicKey = ByteString.copyFrom(publicKey.toByteArray())
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result.name = name
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val encryptionKeyPairAsProto = SignalServiceProtos.KeyPair.newBuilder()
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encryptionKeyPairAsProto.publicKey = ByteString.copyFrom(encryptionKeyPair.publicKey.serialize().removing05PrefixIfNeeded())
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encryptionKeyPairAsProto.privateKey = ByteString.copyFrom(encryptionKeyPair.privateKey.serialize())
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result.encryptionKeyPair = encryptionKeyPairAsProto.build()
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result.addAllMembers(members.map { ByteString.copyFrom(it.toByteArray()) })
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result.addAllAdmins(admins.map { ByteString.copyFrom(it.toByteArray()) })
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return result.build()
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}
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}
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override val ttl: Long = 4 * 24 * 60 * 60 * 1000
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override val isSelfSendValid: Boolean = true
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companion object {
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fun getCurrent(): ConfigurationMessage {
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val closedGroups = mutableListOf<ClosedGroup>()
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val openGroups = mutableListOf<String>()
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val storage = MessagingConfiguration.shared.storage
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val groups = storage.getAllGroups()
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for (groupRecord in groups) {
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if (groupRecord.isClosedGroup) {
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if (!groupRecord.members.contains(Address.fromSerialized(storage.getUserPublicKey()!!))) continue
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val groupPublicKey = GroupUtil.getDecodedGroupID(groupRecord.encodedId) // TODO: Check if this is correct. Does it need to be double decoded?
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if (!storage.isClosedGroup(groupPublicKey)) continue
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val encryptionKeyPair = storage.getLatestClosedGroupEncryptionKeyPair(groupPublicKey) ?: continue
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val closedGroup = ClosedGroup(groupPublicKey, groupRecord.title, encryptionKeyPair, groupRecord.members.map { it.serialize() }, groupRecord.admins.map { it.serialize() })
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closedGroups.add(closedGroup)
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}
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if (groupRecord.isOpenGroup) {
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val threadID = storage.getThreadID(groupRecord.encodedId) ?: continue
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val openGroup = storage.getOpenGroup(threadID) ?: continue
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openGroups.add(openGroup.server)
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}
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}
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return ConfigurationMessage(closedGroups, openGroups)
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}
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fun fromProto(proto: SignalServiceProtos.Content): ConfigurationMessage? {
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if (!proto.hasConfigurationMessage()) return null
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val configurationProto = proto.configurationMessage
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val closedGroups = configurationProto.closedGroupsList.mapNotNull { ClosedGroup.fromProto(it) }
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val openGroups = configurationProto.openGroupsList
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return ConfigurationMessage(closedGroups, openGroups)
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}
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}
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override fun toProto(): SignalServiceProtos.Content? {
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val configurationProto = SignalServiceProtos.ConfigurationMessage.newBuilder()
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configurationProto.addAllClosedGroups(closedGroups.mapNotNull { it.toProto() })
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configurationProto.addAllOpenGroups(openGroups)
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val contentProto = SignalServiceProtos.Content.newBuilder()
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contentProto.configurationMessage = configurationProto.build()
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return contentProto.build()
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}
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override fun toString(): String {
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return """
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ConfigurationMessage(
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closedGroups: ${(closedGroups)}
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openGroups: ${(openGroups)}
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)
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""".trimIndent()
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}
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}
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