mirror of
https://github.com/element-hq/element-android
synced 2024-10-23 11:16:33 +03:00
Fix unneeded re-uploade of key got from backup
and disabled prompting for untrusted key sharing
This commit is contained in:
Valere
parent
cc107498eb
commit
88cf1a5e67
5 changed files with 183 additions and 135 deletions
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@ -20,6 +20,7 @@ import kotlinx.coroutines.CoroutineScope
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import kotlinx.coroutines.SupervisorJob
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import kotlinx.coroutines.asCoroutineDispatcher
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import kotlinx.coroutines.cancel
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import kotlinx.coroutines.delay
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import kotlinx.coroutines.launch
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import kotlinx.coroutines.withContext
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import org.matrix.android.sdk.api.MatrixCoroutineDispatchers
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@ -168,6 +169,11 @@ internal class OutgoingKeyRequestManager @Inject constructor(
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sequencer.post {
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cryptoStore.deleteOutgoingRoomKeyRequestInState(OutgoingRoomKeyRequestState.SENT)
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}
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sequencer.post {
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delay(1000)
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perSessionBackupQueryRateLimiter.refreshBackupInfoIfNeeded(true)
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}
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}
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}
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}
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@ -68,7 +68,7 @@ internal class PerSessionBackupQueryRateLimiter @Inject constructor(
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var backupWasCheckedFromServer: Boolean = false
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var now = System.currentTimeMillis()
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private fun refreshBackupInfoIfNeeded(force: Boolean = false) {
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fun refreshBackupInfoIfNeeded(force: Boolean = false) {
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if (backupWasCheckedFromServer && !force) return
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Timber.tag(loggerTag.value).v("Checking if can access a backup")
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backupWasCheckedFromServer = true
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@ -63,16 +63,11 @@ import org.matrix.android.sdk.internal.crypto.keysbackup.model.rest.RoomKeysBack
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import org.matrix.android.sdk.internal.crypto.keysbackup.model.rest.UpdateKeysBackupVersionBody
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import org.matrix.android.sdk.internal.crypto.keysbackup.tasks.CreateKeysBackupVersionTask
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import org.matrix.android.sdk.internal.crypto.keysbackup.tasks.DeleteBackupTask
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import org.matrix.android.sdk.internal.crypto.keysbackup.tasks.DeleteRoomSessionDataTask
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import org.matrix.android.sdk.internal.crypto.keysbackup.tasks.DeleteRoomSessionsDataTask
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import org.matrix.android.sdk.internal.crypto.keysbackup.tasks.DeleteSessionsDataTask
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import org.matrix.android.sdk.internal.crypto.keysbackup.tasks.GetKeysBackupLastVersionTask
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import org.matrix.android.sdk.internal.crypto.keysbackup.tasks.GetKeysBackupVersionTask
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import org.matrix.android.sdk.internal.crypto.keysbackup.tasks.GetRoomSessionDataTask
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import org.matrix.android.sdk.internal.crypto.keysbackup.tasks.GetRoomSessionsDataTask
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import org.matrix.android.sdk.internal.crypto.keysbackup.tasks.GetSessionsDataTask
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import org.matrix.android.sdk.internal.crypto.keysbackup.tasks.StoreRoomSessionDataTask
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import org.matrix.android.sdk.internal.crypto.keysbackup.tasks.StoreRoomSessionsDataTask
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import org.matrix.android.sdk.internal.crypto.keysbackup.tasks.StoreSessionsDataTask
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import org.matrix.android.sdk.internal.crypto.keysbackup.tasks.UpdateKeysBackupVersionTask
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import org.matrix.android.sdk.internal.crypto.model.OlmInboundGroupSessionWrapper2
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@ -112,16 +107,11 @@ internal class DefaultKeysBackupService @Inject constructor(
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// Tasks
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private val createKeysBackupVersionTask: CreateKeysBackupVersionTask,
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private val deleteBackupTask: DeleteBackupTask,
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private val deleteRoomSessionDataTask: DeleteRoomSessionDataTask,
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private val deleteRoomSessionsDataTask: DeleteRoomSessionsDataTask,
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private val deleteSessionDataTask: DeleteSessionsDataTask,
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private val getKeysBackupLastVersionTask: GetKeysBackupLastVersionTask,
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private val getKeysBackupVersionTask: GetKeysBackupVersionTask,
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private val getRoomSessionDataTask: GetRoomSessionDataTask,
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private val getRoomSessionsDataTask: GetRoomSessionsDataTask,
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private val getSessionsDataTask: GetSessionsDataTask,
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private val storeRoomSessionDataTask: StoreRoomSessionDataTask,
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private val storeSessionsDataTask: StoreRoomSessionsDataTask,
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private val storeSessionDataTask: StoreSessionsDataTask,
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private val updateKeysBackupVersionTask: UpdateKeysBackupVersionTask,
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// Task executor
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@ -168,58 +158,63 @@ internal class DefaultKeysBackupService @Inject constructor(
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override fun prepareKeysBackupVersion(password: String?,
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progressListener: ProgressListener?,
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callback: MatrixCallback<MegolmBackupCreationInfo>) {
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cryptoCoroutineScope.launch(coroutineDispatchers.main) {
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runCatching {
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withContext(coroutineDispatchers.crypto) {
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val olmPkDecryption = OlmPkDecryption()
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val signalableMegolmBackupAuthData = if (password != null) {
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// Generate a private key from the password
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val backgroundProgressListener = if (progressListener == null) {
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null
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} else {
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object : ProgressListener {
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override fun onProgress(progress: Int, total: Int) {
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uiHandler.post {
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try {
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progressListener.onProgress(progress, total)
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} catch (e: Exception) {
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Timber.e(e, "prepareKeysBackupVersion: onProgress failure")
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}
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cryptoCoroutineScope.launch(coroutineDispatchers.io) {
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try {
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val olmPkDecryption = OlmPkDecryption()
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val signalableMegolmBackupAuthData = if (password != null) {
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// Generate a private key from the password
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val backgroundProgressListener = if (progressListener == null) {
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null
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} else {
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object : ProgressListener {
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override fun onProgress(progress: Int, total: Int) {
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uiHandler.post {
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try {
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progressListener.onProgress(progress, total)
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} catch (e: Exception) {
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Timber.e(e, "prepareKeysBackupVersion: onProgress failure")
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}
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}
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}
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}
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val generatePrivateKeyResult = generatePrivateKeyWithPassword(password, backgroundProgressListener)
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SignalableMegolmBackupAuthData(
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publicKey = olmPkDecryption.setPrivateKey(generatePrivateKeyResult.privateKey),
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privateKeySalt = generatePrivateKeyResult.salt,
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privateKeyIterations = generatePrivateKeyResult.iterations
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)
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} else {
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val publicKey = olmPkDecryption.generateKey()
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SignalableMegolmBackupAuthData(
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publicKey = publicKey
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)
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}
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val canonicalJson = JsonCanonicalizer.getCanonicalJson(Map::class.java, signalableMegolmBackupAuthData.signalableJSONDictionary())
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val signedMegolmBackupAuthData = MegolmBackupAuthData(
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publicKey = signalableMegolmBackupAuthData.publicKey,
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privateKeySalt = signalableMegolmBackupAuthData.privateKeySalt,
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privateKeyIterations = signalableMegolmBackupAuthData.privateKeyIterations,
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signatures = objectSigner.signObject(canonicalJson)
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val generatePrivateKeyResult = generatePrivateKeyWithPassword(password, backgroundProgressListener)
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SignalableMegolmBackupAuthData(
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publicKey = olmPkDecryption.setPrivateKey(generatePrivateKeyResult.privateKey),
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privateKeySalt = generatePrivateKeyResult.salt,
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privateKeyIterations = generatePrivateKeyResult.iterations
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)
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} else {
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val publicKey = olmPkDecryption.generateKey()
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MegolmBackupCreationInfo(
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algorithm = MXCRYPTO_ALGORITHM_MEGOLM_BACKUP,
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authData = signedMegolmBackupAuthData,
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recoveryKey = computeRecoveryKey(olmPkDecryption.privateKey())
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SignalableMegolmBackupAuthData(
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publicKey = publicKey
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)
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}
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}.foldToCallback(callback)
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val canonicalJson = JsonCanonicalizer.getCanonicalJson(Map::class.java, signalableMegolmBackupAuthData.signalableJSONDictionary())
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val signedMegolmBackupAuthData = MegolmBackupAuthData(
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publicKey = signalableMegolmBackupAuthData.publicKey,
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privateKeySalt = signalableMegolmBackupAuthData.privateKeySalt,
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privateKeyIterations = signalableMegolmBackupAuthData.privateKeyIterations,
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signatures = objectSigner.signObject(canonicalJson)
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)
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val creationInfo = MegolmBackupCreationInfo(
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algorithm = MXCRYPTO_ALGORITHM_MEGOLM_BACKUP,
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authData = signedMegolmBackupAuthData,
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recoveryKey = computeRecoveryKey(olmPkDecryption.privateKey())
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)
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uiHandler.post {
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callback.onSuccess(creationInfo)
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}
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} catch (failure: Throwable) {
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uiHandler.post {
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callback.onFailure(failure)
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}
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}
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}
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}
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@ -267,41 +262,39 @@ internal class DefaultKeysBackupService @Inject constructor(
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}
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override fun deleteBackup(version: String, callback: MatrixCallback<Unit>?) {
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cryptoCoroutineScope.launch(coroutineDispatchers.main) {
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withContext(coroutineDispatchers.crypto) {
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// If we're currently backing up to this backup... stop.
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// (We start using it automatically in createKeysBackupVersion so this is symmetrical).
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if (keysBackupVersion != null && version == keysBackupVersion?.version) {
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resetKeysBackupData()
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keysBackupVersion = null
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keysBackupStateManager.state = KeysBackupState.Unknown
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}
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cryptoCoroutineScope.launch(coroutineDispatchers.io) {
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// If we're currently backing up to this backup... stop.
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// (We start using it automatically in createKeysBackupVersion so this is symmetrical).
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if (keysBackupVersion != null && version == keysBackupVersion?.version) {
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resetKeysBackupData()
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keysBackupVersion = null
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keysBackupStateManager.state = KeysBackupState.Unknown
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}
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deleteBackupTask
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.configureWith(DeleteBackupTask.Params(version)) {
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this.callback = object : MatrixCallback<Unit> {
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private fun eventuallyRestartBackup() {
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// Do not stay in KeysBackupState.Unknown but check what is available on the homeserver
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if (state == KeysBackupState.Unknown) {
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checkAndStartKeysBackup()
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}
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}
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override fun onSuccess(data: Unit) {
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eventuallyRestartBackup()
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uiHandler.post { callback?.onSuccess(Unit) }
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}
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override fun onFailure(failure: Throwable) {
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eventuallyRestartBackup()
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uiHandler.post { callback?.onFailure(failure) }
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deleteBackupTask
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.configureWith(DeleteBackupTask.Params(version)) {
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this.callback = object : MatrixCallback<Unit> {
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private fun eventuallyRestartBackup() {
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// Do not stay in KeysBackupState.Unknown but check what is available on the homeserver
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if (state == KeysBackupState.Unknown) {
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checkAndStartKeysBackup()
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}
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}
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override fun onSuccess(data: Unit) {
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eventuallyRestartBackup()
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uiHandler.post { callback?.onSuccess(Unit) }
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}
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override fun onFailure(failure: Throwable) {
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eventuallyRestartBackup()
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uiHandler.post { callback?.onFailure(failure) }
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}
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}
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.executeBy(taskExecutor)
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}
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}
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.executeBy(taskExecutor)
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}
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}
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@ -480,10 +473,11 @@ internal class DefaultKeysBackupService @Inject constructor(
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if (authData == null) {
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Timber.w("trustKeyBackupVersion:trust: Key backup is missing required data")
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callback.onFailure(IllegalArgumentException("Missing element"))
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uiHandler.post {
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callback.onFailure(IllegalArgumentException("Missing element"))
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}
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} else {
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cryptoCoroutineScope.launch(coroutineDispatchers.main) {
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cryptoCoroutineScope.launch(coroutineDispatchers.io) {
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val updateKeysBackupVersionBody = withContext(coroutineDispatchers.crypto) {
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// Get current signatures, or create an empty set
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val myUserSignatures = authData.signatures?.get(userId).orEmpty().toMutableMap()
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@ -535,11 +529,15 @@ internal class DefaultKeysBackupService @Inject constructor(
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checkAndStartWithKeysBackupVersion(newKeysBackupVersion)
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callback.onSuccess(data)
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uiHandler.post {
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callback.onSuccess(data)
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}
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}
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override fun onFailure(failure: Throwable) {
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callback.onFailure(failure)
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uiHandler.post {
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callback.onFailure(failure)
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}
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}
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}
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}
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@ -553,15 +551,14 @@ internal class DefaultKeysBackupService @Inject constructor(
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callback: MatrixCallback<Unit>) {
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Timber.v("trustKeysBackupVersionWithRecoveryKey: version ${keysBackupVersion.version}")
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cryptoCoroutineScope.launch(coroutineDispatchers.main) {
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val isValid = withContext(coroutineDispatchers.crypto) {
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isValidRecoveryKeyForKeysBackupVersion(recoveryKey, keysBackupVersion)
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}
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cryptoCoroutineScope.launch(coroutineDispatchers.io) {
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val isValid = isValidRecoveryKeyForKeysBackupVersion(recoveryKey, keysBackupVersion)
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if (!isValid) {
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Timber.w("trustKeyBackupVersionWithRecoveryKey: Invalid recovery key.")
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callback.onFailure(IllegalArgumentException("Invalid recovery key or password"))
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uiHandler.post {
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callback.onFailure(IllegalArgumentException("Invalid recovery key or password"))
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}
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} else {
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trustKeysBackupVersion(keysBackupVersion, true, callback)
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}
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@ -573,15 +570,14 @@ internal class DefaultKeysBackupService @Inject constructor(
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callback: MatrixCallback<Unit>) {
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Timber.v("trustKeysBackupVersionWithPassphrase: version ${keysBackupVersion.version}")
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cryptoCoroutineScope.launch(coroutineDispatchers.main) {
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val recoveryKey = withContext(coroutineDispatchers.crypto) {
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recoveryKeyFromPassword(password, keysBackupVersion, null)
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}
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cryptoCoroutineScope.launch(coroutineDispatchers.io) {
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val recoveryKey = recoveryKeyFromPassword(password, keysBackupVersion, null)
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if (recoveryKey == null) {
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Timber.w("trustKeysBackupVersionWithPassphrase: Key backup is missing required data")
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callback.onFailure(IllegalArgumentException("Missing element"))
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uiHandler.post {
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callback.onFailure(IllegalArgumentException("Missing element"))
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}
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} else {
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// Check trust using the recovery key
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trustKeysBackupVersionWithRecoveryKey(keysBackupVersion, recoveryKey, callback)
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@ -592,30 +588,23 @@ internal class DefaultKeysBackupService @Inject constructor(
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override fun onSecretKeyGossip(secret: String) {
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Timber.i("## CrossSigning - onSecretKeyGossip")
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cryptoCoroutineScope.launch(coroutineDispatchers.main) {
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cryptoCoroutineScope.launch(coroutineDispatchers.io) {
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try {
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when (val keysBackupLastVersionResult = getKeysBackupLastVersionTask.execute(Unit)) {
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KeysBackupLastVersionResult.NoKeysBackup -> {
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Timber.d("No keys backup found")
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}
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is KeysBackupLastVersionResult.KeysBackup -> {
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val keysBackupVersion = keysBackupLastVersionResult.keysVersionResult
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val recoveryKey = computeRecoveryKey(secret.fromBase64())
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if (isValidRecoveryKeyForKeysBackupVersion(recoveryKey, keysBackupVersion)) {
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awaitCallback<Unit> {
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trustKeysBackupVersion(keysBackupVersion, true, it)
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}
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val importResult = awaitCallback<ImportRoomKeysResult> {
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restoreKeysWithRecoveryKey(keysBackupVersion, recoveryKey, null, null, null, it)
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}
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withContext(coroutineDispatchers.crypto) {
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cryptoStore.saveBackupRecoveryKey(recoveryKey, keysBackupVersion.version)
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}
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Timber.i("onSecretKeyGossip: Recovered keys $importResult")
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} else {
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Timber.e("onSecretKeyGossip: Recovery key is not valid ${keysBackupVersion.version}")
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}
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// we don't want to start immediately downloading all as it can take very long
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// val importResult = awaitCallback<ImportRoomKeysResult> {
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// restoreKeysWithRecoveryKey(keysBackupVersion, recoveryKey, null, null, null, it)
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// }
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withContext(coroutineDispatchers.crypto) {
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cryptoStore.saveBackupRecoveryKey(recoveryKey, keysBackupVersion.version)
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}
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Timber.i("onSecretKeyGossip: saved valid backup key")
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} else {
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Timber.e("onSecretKeyGossip: Recovery key is not valid ${keysBackupVersion.version}")
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}
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} catch (failure: Throwable) {
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Timber.e("onSecretKeyGossip: failed to trust key backup version ${keysBackupVersion?.version}")
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@ -678,9 +667,9 @@ internal class DefaultKeysBackupService @Inject constructor(
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callback: MatrixCallback<ImportRoomKeysResult>) {
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Timber.v("restoreKeysWithRecoveryKey: From backup version: ${keysVersionResult.version}")
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cryptoCoroutineScope.launch(coroutineDispatchers.main) {
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cryptoCoroutineScope.launch(coroutineDispatchers.io) {
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runCatching {
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val decryption = withContext(coroutineDispatchers.crypto) {
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val decryption = withContext(coroutineDispatchers.computation) {
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// Check if the recovery is valid before going any further
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if (!isValidRecoveryKeyForKeysBackupVersion(recoveryKey, keysVersionResult)) {
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Timber.e("restoreKeysWithRecoveryKey: Invalid recovery key for this keys version")
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@ -749,7 +738,19 @@ internal class DefaultKeysBackupService @Inject constructor(
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}
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result
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}
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}.foldToCallback(callback)
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}.foldToCallback(object : MatrixCallback<ImportRoomKeysResult> {
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override fun onSuccess(data: ImportRoomKeysResult) {
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uiHandler.post {
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callback.onSuccess(data)
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}
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}
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override fun onFailure(failure: Throwable) {
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uiHandler.post {
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callback.onFailure(failure)
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}
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}
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})
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}
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}
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@ -761,7 +762,7 @@ internal class DefaultKeysBackupService @Inject constructor(
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callback: MatrixCallback<ImportRoomKeysResult>) {
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Timber.v("[MXKeyBackup] restoreKeyBackup with password: From backup version: ${keysBackupVersion.version}")
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cryptoCoroutineScope.launch(coroutineDispatchers.main) {
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cryptoCoroutineScope.launch(coroutineDispatchers.io) {
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runCatching {
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val progressListener = if (stepProgressListener != null) {
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object : ProgressListener {
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@ -786,7 +787,19 @@ internal class DefaultKeysBackupService @Inject constructor(
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restoreKeysWithRecoveryKey(keysBackupVersion, recoveryKey, roomId, sessionId, stepProgressListener, it)
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}
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}
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}.foldToCallback(callback)
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}.foldToCallback(object : MatrixCallback<ImportRoomKeysResult> {
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override fun onSuccess(data: ImportRoomKeysResult) {
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uiHandler.post {
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callback.onSuccess(data)
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}
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}
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override fun onFailure(failure: Throwable) {
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uiHandler.post {
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callback.onFailure(failure)
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}
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}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -740,14 +740,23 @@ internal class RealmCryptoStore @Inject constructor(
|
|||
if (sessionIdentifier != null) {
|
||||
val key = OlmInboundGroupSessionEntity.createPrimaryKey(sessionIdentifier, session.senderKey)
|
||||
|
||||
val realmOlmInboundGroupSession = OlmInboundGroupSessionEntity().apply {
|
||||
primaryKey = key
|
||||
sessionId = sessionIdentifier
|
||||
senderKey = session.senderKey
|
||||
putInboundGroupSession(session)
|
||||
}
|
||||
val existing = realm.where<OlmInboundGroupSessionEntity>()
|
||||
.equalTo(OlmInboundGroupSessionEntityFields.PRIMARY_KEY, key)
|
||||
.findFirst()
|
||||
|
||||
realm.insertOrUpdate(realmOlmInboundGroupSession)
|
||||
if (existing != null) {
|
||||
// we want to keep the existing backup status
|
||||
existing.putInboundGroupSession(session)
|
||||
} else {
|
||||
val realmOlmInboundGroupSession = OlmInboundGroupSessionEntity().apply {
|
||||
primaryKey = key
|
||||
sessionId = sessionIdentifier
|
||||
senderKey = session.senderKey
|
||||
putInboundGroupSession(session)
|
||||
}
|
||||
|
||||
realm.insertOrUpdate(realmOlmInboundGroupSession)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -876,17 +885,32 @@ internal class RealmCryptoStore @Inject constructor(
|
|||
return
|
||||
}
|
||||
|
||||
doRealmTransaction(realmConfiguration) {
|
||||
doRealmTransaction(realmConfiguration) { realm ->
|
||||
olmInboundGroupSessionWrappers.forEach { olmInboundGroupSessionWrapper ->
|
||||
try {
|
||||
val sessionIdentifier = olmInboundGroupSessionWrapper.olmInboundGroupSession?.sessionIdentifier()
|
||||
val key = OlmInboundGroupSessionEntity.createPrimaryKey(
|
||||
olmInboundGroupSessionWrapper.olmInboundGroupSession?.sessionIdentifier(),
|
||||
sessionIdentifier,
|
||||
olmInboundGroupSessionWrapper.senderKey)
|
||||
|
||||
it.where<OlmInboundGroupSessionEntity>()
|
||||
val existing = realm.where<OlmInboundGroupSessionEntity>()
|
||||
.equalTo(OlmInboundGroupSessionEntityFields.PRIMARY_KEY, key)
|
||||
.findFirst()
|
||||
?.backedUp = true
|
||||
|
||||
if (existing != null) {
|
||||
existing.backedUp = true
|
||||
} else {
|
||||
// ... might be in cache but not yet persisted, create a record to persist backedup state
|
||||
val realmOlmInboundGroupSession = OlmInboundGroupSessionEntity().apply {
|
||||
primaryKey = key
|
||||
sessionId = sessionIdentifier
|
||||
senderKey = olmInboundGroupSessionWrapper.senderKey
|
||||
putInboundGroupSession(olmInboundGroupSessionWrapper)
|
||||
backedUp = true
|
||||
}
|
||||
|
||||
realm.insertOrUpdate(realmOlmInboundGroupSession)
|
||||
}
|
||||
} catch (e: OlmException) {
|
||||
Timber.e(e, "OlmException")
|
||||
}
|
||||
|
|
|
|||
|
|
@ -68,6 +68,9 @@ class KeyRequestHandler @Inject constructor(
|
|||
|
||||
var session: Session? = null
|
||||
|
||||
// This functionality is disabled in element for now. As it could be prone to social attacks
|
||||
var enablePromptingForRequest = false
|
||||
|
||||
fun start(session: Session) {
|
||||
this.session = session
|
||||
session.cryptoService().verificationService().addListener(this)
|
||||
|
|
@ -92,6 +95,8 @@ class KeyRequestHandler @Inject constructor(
|
|||
* @param request the key request.
|
||||
*/
|
||||
override fun onRoomKeyRequest(request: IncomingRoomKeyRequest) {
|
||||
if (!enablePromptingForRequest) return
|
||||
|
||||
val userId = request.userId
|
||||
val deviceId = request.deviceId
|
||||
val requestId = request.requestId
|
||||
|
|
|
|||
Loading…
Reference in a new issue