Be robust if Event.type is missing (#2946)

CHANGES.md

@@ -11,6 +11,7 @@ Improvements 🙌:
 
 Bugfix 🐛:
  - Try to fix crash about UrlPreview (#2640)
+ - Be robust if Event.type is missing (#2946)
 
 Translations 🗣:
  -

matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/events/model/Event.kt

@@ -66,7 +66,7 @@ inline fun <reified T> T.toContent(): Content {
  */
 @JsonClass(generateAdapter = true)
 data class Event(
-        @Json(name = "type") val type: String,
+        @Json(name = "type") val type: String? = null,
         @Json(name = "event_id") val eventId: String? = null,
         @Json(name = "content") val content: Content? = null,
         @Json(name = "prev_content") val prevContent: Content? = null,
@@ -135,7 +135,7 @@ data class Event(
      * @return the event type
      */
     fun getClearType(): String {
-        return mxDecryptionResult?.payload?.get("type")?.toString() ?: type
+        return mxDecryptionResult?.payload?.get("type")?.toString() ?: type ?: EventType.MISSING_TYPE
     }
 
     /**

matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/events/model/EventType.kt

@@ -20,6 +20,8 @@ package org.matrix.android.sdk.api.session.events.model
  * Constants defining known event types from Matrix specifications.
  */
 object EventType {
+    // Used when the type is missing, which should not happen
+    const val MISSING_TYPE = "org.matrix.android.sdk.missing_type"
 
     const val PRESENCE = "m.presence"
     const val MESSAGE = "m.room.message"

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/tasks/EncryptEventTask.kt

@@ -45,7 +45,7 @@ internal class DefaultEncryptEventTask @Inject constructor(
         // don't want to wait for any query
         // if (!params.crypto.isRoomEncrypted(params.roomId)) return params.event
         val localEvent = params.event
-        if (localEvent.eventId == null) {
+        if (localEvent.eventId == null || localEvent.type == null) {
             throw IllegalArgumentException()
         }
 

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/tasks/SendEventTask.kt

@@ -58,7 +58,7 @@ internal class DefaultSendEventTask @Inject constructor(
                         localId,
                         roomId = event.roomId ?: "",
                         content = event.content,
-                        eventType = event.type
+                        eventType = event.type ?: ""
                 )
             }
             localEchoRepository.updateSendState(localId, params.event.roomId, SendState.SENT)

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/tasks/SendVerificationMessageTask.kt

@@ -50,7 +50,7 @@ internal class DefaultSendVerificationMessageTask @Inject constructor(
                         localId,
                         roomId = event.roomId ?: "",
                         content = event.content,
-                        eventType = event.type
+                        eventType = event.type ?: ""
                 )
             }
             localEchoRepository.updateSendState(localId, event.roomId, SendState.SENT)

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/database/mapper/EventMapper.kt

@@ -19,6 +19,7 @@ package org.matrix.android.sdk.internal.database.mapper
 import com.squareup.moshi.JsonDataException
 import org.matrix.android.sdk.api.session.crypto.MXCryptoError
 import org.matrix.android.sdk.api.session.events.model.Event
+import org.matrix.android.sdk.api.session.events.model.EventType
 import org.matrix.android.sdk.api.session.events.model.UnsignedData
 import org.matrix.android.sdk.api.session.room.send.SendState
 import org.matrix.android.sdk.internal.crypto.algorithms.olm.OlmDecryptionResult
@@ -29,8 +30,6 @@ import timber.log.Timber
 internal object EventMapper {
 
     fun map(event: Event, roomId: String): EventEntity {
-        val uds = if (event.unsignedData == null) null
-        else MoshiProvider.providesMoshi().adapter(UnsignedData::class.java).toJson(event.unsignedData)
         val eventEntity = EventEntity()
         // TODO change this as we shouldn't use event everywhere
         eventEntity.eventId = event.eventId ?: "$$roomId-${System.currentTimeMillis()}-${event.hashCode()}"
@@ -39,14 +38,16 @@ internal object EventMapper {
         eventEntity.prevContent = ContentMapper.map(event.resolvedPrevContent())
         eventEntity.isUseless = IsUselessResolver.isUseless(event)
         eventEntity.stateKey = event.stateKey
-        eventEntity.type = event.type
+        eventEntity.type = event.type ?: EventType.MISSING_TYPE
         eventEntity.sender = event.senderId
         eventEntity.originServerTs = event.originServerTs
         eventEntity.redacts = event.redacts
         eventEntity.age = event.unsignedData?.age ?: event.originServerTs
-        eventEntity.unsignedData = uds
+        eventEntity.unsignedData = event.unsignedData?.let {
+            MoshiProvider.providesMoshi().adapter(UnsignedData::class.java).toJson(it)
+        }
         eventEntity.decryptionResultJson = event.mxDecryptionResult?.let {
-            MoshiProvider.providesMoshi().adapter<OlmDecryptionResult>(OlmDecryptionResult::class.java).toJson(it)
+            MoshiProvider.providesMoshi().adapter(OlmDecryptionResult::class.java).toJson(it)
         }
         eventEntity.decryptionErrorReason = event.mCryptoErrorReason
         eventEntity.decryptionErrorCode = event.mCryptoError?.name

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/membership/LoadRoomMembersTask.kt

@@ -105,12 +105,17 @@ internal class DefaultLoadRoomMembersTask @Inject constructor(
                     ?: realm.createObject(roomId)
             val now = System.currentTimeMillis()
             for (roomMemberEvent in response.roomMemberEvents) {
-                if (roomMemberEvent.eventId == null || roomMemberEvent.stateKey == null) {
+                if (roomMemberEvent.eventId == null || roomMemberEvent.stateKey == null || roomMemberEvent.type == null) {
                     continue
                 }
                 val ageLocalTs = roomMemberEvent.unsignedData?.age?.let { now - it }
                 val eventEntity = roomMemberEvent.toEntity(roomId, SendState.SYNCED, ageLocalTs).copyToRealmOrIgnore(realm, EventInsertType.PAGINATION)
-                CurrentStateEventEntity.getOrCreate(realm, roomId, roomMemberEvent.stateKey, roomMemberEvent.type).apply {
+                CurrentStateEventEntity.getOrCreate(
+                        realm,
+                        roomId,
+                        roomMemberEvent.stateKey,
+                        roomMemberEvent.type
+                ).apply {
                     eventId = roomMemberEvent.eventId
                     root = eventEntity
                 }

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/relation/SendRelationWorker.kt

@@ -89,7 +89,7 @@ internal class SendRelationWorker(context: Context, params: WorkerParameters)
                     roomId = roomId,
                     parentId = relatedEventId,
                     relationType = relationType,
-                    eventType = localEvent.type,
+                    eventType = localEvent.type!!,
                     content = localEvent.content
             )
         }

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/LocalEchoRepository.kt

@@ -56,10 +56,10 @@ internal class LocalEchoRepository @Inject constructor(@SessionDatabase private
 
     fun createLocalEcho(event: Event) {
         val roomId = event.roomId ?: throw IllegalStateException("You should have set a roomId for your event")
-        val senderId = event.senderId ?: throw IllegalStateException("You should have set a senderIf for your event")
+        val senderId = event.senderId ?: throw IllegalStateException("You should have set a senderId for your event")
-        if (event.eventId == null) {
+        event.eventId ?: throw IllegalStateException("You should have set an eventId for your event")
-            throw IllegalStateException("You should have set an eventId for your event")
+        event.type ?: throw IllegalStateException("You should have set a type for your event")
-        }
+
         val timelineEventEntity = realmSessionProvider.withRealm { realm ->
             val eventEntity = event.toEntity(roomId, SendState.UNSENT, System.currentTimeMillis())
             val roomMemberHelper = RoomMemberHelper(realm, roomId)

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/sync/RoomSyncHandler.kt

@@ -198,7 +198,7 @@ internal class RoomSyncHandler @Inject constructor(private val readReceiptHandle
         // State event
         if (roomSync.state?.events?.isNotEmpty() == true) {
             for (event in roomSync.state.events) {
-                if (event.eventId == null || event.stateKey == null) {
+                if (event.eventId == null || event.stateKey == null || event.type == null) {
                     continue
                 }
                 val ageLocalTs = event.unsignedData?.age?.let { syncLocalTimestampMillis - it }
@@ -254,7 +254,7 @@ internal class RoomSyncHandler @Inject constructor(private val readReceiptHandle
         roomEntity.membership = Membership.INVITE
         if (roomSync.inviteState != null && roomSync.inviteState.events.isNotEmpty()) {
             roomSync.inviteState.events.forEach { event ->
-                if (event.stateKey == null) {
+                if (event.stateKey == null || event.type == null) {
                     return@forEach
                 }
                 val ageLocalTs = event.unsignedData?.age?.let { syncLocalTimestampMillis - it }
@@ -281,7 +281,7 @@ internal class RoomSyncHandler @Inject constructor(private val readReceiptHandle
                                syncLocalTimestampMillis: Long): RoomEntity {
         val roomEntity = RoomEntity.where(realm, roomId).findFirst() ?: realm.createObject(roomId)
         for (event in roomSync.state?.events.orEmpty()) {
-            if (event.eventId == null || event.stateKey == null) {
+            if (event.eventId == null || event.stateKey == null || event.type == null) {
                 continue
             }
             val ageLocalTs = event.unsignedData?.age?.let { syncLocalTimestampMillis - it }
@@ -293,7 +293,7 @@ internal class RoomSyncHandler @Inject constructor(private val readReceiptHandle
             roomMemberEventHandler.handle(realm, roomId, event)
         }
         for (event in roomSync.timeline?.events.orEmpty()) {
-            if (event.eventId == null || event.senderId == null) {
+            if (event.eventId == null || event.senderId == null || event.type == null) {
                 continue
             }
             val ageLocalTs = event.unsignedData?.age?.let { syncLocalTimestampMillis - it }
@@ -340,7 +340,7 @@ internal class RoomSyncHandler @Inject constructor(private val readReceiptHandle
         val roomMemberContentsByUser = HashMap<String, RoomMemberContent?>()
 
         for (event in eventList) {
-            if (event.eventId == null || event.senderId == null) {
+            if (event.eventId == null || event.senderId == null || event.type == null) {
                 continue
             }
             eventIds.add(event.eventId)

vector/src/main/java/im/vector/app/features/devtools/RoomStateListController.kt

@@ -37,7 +37,7 @@ class RoomStateListController @Inject constructor(
     override fun buildModels(data: RoomDevToolViewState?) {
         when (data?.displayMode) {
             RoomDevToolViewState.Mode.StateEventList -> {
-                val stateEventsGroups = data.stateEvents.invoke().orEmpty().groupBy { it.type }
+                val stateEventsGroups = data.stateEvents.invoke().orEmpty().groupBy { it.getClearType() }
 
                 if (stateEventsGroups.isEmpty()) {
                     noResultItem {

vector/src/main/java/im/vector/app/features/notifications/NotifiableEventResolver.kt

@@ -68,7 +68,7 @@ class NotifiableEventResolver @Inject constructor(private val stringProvider: St
                 // If the event can be displayed, display it as is
                 Timber.w("NotifiableEventResolver Received an unsupported event matching a bing rule")
                 // TODO Better event text display
-                val bodyPreview = event.type
+                val bodyPreview = event.type ?: EventType.MISSING_TYPE
 
                 return SimpleNotifiableEvent(
                         session.myUserId,