Merge pull request #464 from hjubb/fix_npe_and_fail_contact_parse

fix: return early if no profile name (prefs likely invalid state) and ignore contacts whose publicKey fails to parse

app/src/main/java/org/thoughtcrime/securesms/loki/protocol/MultiDeviceProtocol.kt

@@ -34,7 +34,7 @@ object MultiDeviceProtocol {
         }.map { recipient ->
             ConfigurationMessage.Contact(recipient.address.serialize(), recipient.name!!, recipient.profileAvatar, recipient.profileKey)
         }
-        val configurationMessage = ConfigurationMessage.getCurrent(contacts)
+        val configurationMessage = ConfigurationMessage.getCurrent(contacts) ?: return
         val serializedMessage = configurationMessage.toProto()!!.toByteArray()
         val messageSender = ApplicationContext.getInstance(context).communicationModule.provideSignalMessageSender()
         val address = SignalServiceAddress(userPublicKey)
@@ -58,7 +58,7 @@ object MultiDeviceProtocol {
         }.map { recipient ->
             ConfigurationMessage.Contact(recipient.address.serialize(), recipient.name!!, recipient.profileAvatar, recipient.profileKey)
         }
-        val configurationMessage = ConfigurationMessage.getCurrent(contacts)
+        val configurationMessage = ConfigurationMessage.getCurrent(contacts) ?: return
         val serializedMessage = configurationMessage.toProto()!!.toByteArray()
         val messageSender = ApplicationContext.getInstance(context).communicationModule.provideSignalMessageSender()
         val address = SignalServiceAddress(userPublicKey)

libsession/src/main/java/org/session/libsession/messaging/messages/control/ConfigurationMessage.kt

@@ -67,7 +67,11 @@ class ConfigurationMessage(val closedGroups: List<ClosedGroup>, val openGroups:
         fun toProto(): SignalServiceProtos.ConfigurationMessage.Contact? {
             val result = SignalServiceProtos.ConfigurationMessage.Contact.newBuilder()
             result.name = this.name
+            try {
                 result.publicKey = ByteString.copyFrom(Hex.fromStringCondensed(publicKey))
+            } catch (e: Exception) {
+                return null
+            }
             if (!this.profilePicture.isNullOrEmpty()) {
                 result.profilePicture = this.profilePicture
             }
@@ -83,13 +87,13 @@ class ConfigurationMessage(val closedGroups: List<ClosedGroup>, val openGroups:
 
     companion object {
 
-        fun getCurrent(contacts: List<Contact>): ConfigurationMessage {
+        fun getCurrent(contacts: List<Contact>): ConfigurationMessage? {
             val closedGroups = mutableListOf<ClosedGroup>()
             val openGroups = mutableListOf<String>()
             val sharedConfig = MessagingConfiguration.shared
             val storage = sharedConfig.storage
             val context = sharedConfig.context
-            val displayName = TextSecurePreferences.getProfileName(context)!!
+            val displayName = TextSecurePreferences.getProfileName(context) ?: return null
             val profilePicture = TextSecurePreferences.getProfilePictureURL(context)
             val profileKey = ProfileKeyUtil.getProfileKey(context)
             val groups = storage.getAllGroups()