From 9b7bcebdec9a43ec2a388704d35ebcb5c4b52cd3 Mon Sep 17 00:00:00 2001
From: Christian Schneppe <christian@pix-art.de>
Date: Tue, 1 Aug 2017 12:53:14 +0200
Subject: explicitly fetch device ids before building sessions in single mode
 conversation

---
 .../messenger/crypto/axolotl/AxolotlService.java   | 36 ++++++++++++++++++++++
 1 file changed, 36 insertions(+)

(limited to 'src/main/java/de')

diff --git a/src/main/java/de/pixart/messenger/crypto/axolotl/AxolotlService.java b/src/main/java/de/pixart/messenger/crypto/axolotl/AxolotlService.java
index 15cc71c4f..addfbf2ac 100644
--- a/src/main/java/de/pixart/messenger/crypto/axolotl/AxolotlService.java
+++ b/src/main/java/de/pixart/messenger/crypto/axolotl/AxolotlService.java
@@ -861,7 +861,15 @@ public class AxolotlService implements OnAdvancedStreamFeaturesLoaded {
         return !hasAny(jid) && (!deviceIds.containsKey(jid) || deviceIds.get(jid).isEmpty());
     }
 
+    public interface OnDeviceIdsFetched {
+        void fetched(Set<Integer> deviceIds);
+    }
+
     public void fetchDeviceIds(final Jid jid) {
+        fetchDeviceIds(jid, null);
+    }
+
+    public void fetchDeviceIds(final Jid jid, final OnDeviceIdsFetched callback) {
         Log.d(Config.LOGTAG, "fetching device ids for " + jid);
         IqPacket packet = mXmppConnectionService.getIqGenerator().retrieveDeviceIds(jid);
         mXmppConnectionService.sendIqPacket(account, packet, new OnIqPacketReceived() {
@@ -871,8 +879,14 @@ public class AxolotlService implements OnAdvancedStreamFeaturesLoaded {
                     Element item = mXmppConnectionService.getIqParser().getItem(packet);
                     Set<Integer> deviceIds = mXmppConnectionService.getIqParser().deviceIds(item);
                     registerDevices(jid, deviceIds);
+                    if (callback != null) {
+                        callback.fetched(deviceIds);
+                    }
                 } else {
                     Log.d(Config.LOGTAG, packet.toString());
+                    if (callback != null) {
+                        callback.fetched(null);
+                    }
                 }
             }
         });
@@ -1009,6 +1023,28 @@ public class AxolotlService implements OnAdvancedStreamFeaturesLoaded {
     }
 
     public boolean createSessionsIfNeeded(final Conversation conversation) {
+        final Jid jid = conversation.getJid().toBareJid();
+        if (conversation.getMode() == Conversation.MODE_SINGLE && hasEmptyDeviceList(jid)) {
+            final SignalProtocolAddress placeholder = new SignalProtocolAddress(jid.toPreppedString(), Integer.MIN_VALUE);
+            FetchStatus status = fetchStatusMap.get(placeholder);
+            if (status == null || status == FetchStatus.TIMEOUT) {
+                fetchStatusMap.put(placeholder, FetchStatus.PENDING);
+            }
+            fetchDeviceIds(conversation.getJid().toBareJid(), new OnDeviceIdsFetched() {
+                @Override
+                public void fetched(Set<Integer> deviceIds) {
+                    createSessionsIfNeededActual(conversation);
+                    fetchStatusMap.put(placeholder, deviceIds != null && !deviceIds.isEmpty() ? FetchStatus.SUCCESS : FetchStatus.ERROR);
+                    finishBuildingSessionsFromPEP(placeholder);
+                }
+            });
+            return true;
+        } else {
+            return createSessionsIfNeededActual(conversation);
+        }
+    }
+
+    private boolean createSessionsIfNeededActual(final Conversation conversation) {
         Log.i(Config.LOGTAG, AxolotlService.getLogprefix(account) + "Creating axolotl sessions if needed...");
         boolean newSessions = false;
         Set<SignalProtocolAddress> addresses = findDevicesWithoutSession(conversation);
-- 
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