From aca2c1b9e8014e5bea690506d8e34b743d5d93a3 Mon Sep 17 00:00:00 2001
From: Ludovic Marcotte <lmarcotte@inverse.ca>
Date: Mon, 4 Jun 2018 14:47:55 -0400
Subject: [PATCH] (fix) also try to get event using its UID before bailing out

---
 ActiveSync/SOGoActiveSyncDispatcher+Sync.m |  2 +-
 ActiveSync/SOGoActiveSyncDispatcher.m      | 36 ++++++++++++++++++++++
 2 files changed, 37 insertions(+), 1 deletion(-)

diff --git a/ActiveSync/SOGoActiveSyncDispatcher+Sync.m b/ActiveSync/SOGoActiveSyncDispatcher+Sync.m
index 0f16be544..a2bcc852e 100644
--- a/ActiveSync/SOGoActiveSyncDispatcher+Sync.m
+++ b/ActiveSync/SOGoActiveSyncDispatcher+Sync.m
@@ -152,7 +152,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   processIdentifierInCache = [[self globalMetadataForDevice] objectForKey: key];
 
   // Don't update the cache if another request is processing the same collection.
-  // I case of a merged folder we have to check personal folder's lock.
+  // In case of a merged folder we have to check personal folder's lock.
   a = [key componentsSeparatedByString: @"/"];
   pkey = [NSString stringWithFormat: @"%@/personal", [a objectAtIndex:0]];
 
diff --git a/ActiveSync/SOGoActiveSyncDispatcher.m b/ActiveSync/SOGoActiveSyncDispatcher.m
index 2c62a7e35..bcb212350 100644
--- a/ActiveSync/SOGoActiveSyncDispatcher.m
+++ b/ActiveSync/SOGoActiveSyncDispatcher.m
@@ -271,6 +271,39 @@ void handle_eas_terminate(int signum)
   return theIdToTranslate;
 }
 
+//
+//
+//
+- (SOGoAppointmentObject *) _eventObjectWithUID: (NSString *) uid
+{
+  SOGoAppointmentFolder *folder;
+  SOGoAppointmentObject *eventObject;
+  NSArray *folders;
+  NSEnumerator *e;
+  NSString *cname;
+
+  eventObject = nil;
+
+  folders = [[[context activeUser] calendarsFolderInContext: context] subFolders];
+  e = [folders objectEnumerator];
+  while (eventObject == nil && (folder = [e nextObject]))
+    {
+      cname = [folder resourceNameForEventUID: uid];
+      if (cname)
+        {
+          eventObject = [folder lookupName: cname inContext: context
+                                   acquire: NO];
+          if ([eventObject isKindOfClass: [NSException class]])
+            eventObject = nil;
+        }
+    }
+
+  if (eventObject)
+    return eventObject;
+  else
+    return [NSException exceptionWithHTTPStatus:404 /* Not Found */];
+}
+
 //
 //
 //
@@ -1822,6 +1855,9 @@ void handle_eas_terminate(int signum)
                                            inContext: context
                                              acquire: NO];
 
+          if ([appointmentObject isKindOfClass: [NSException class]])
+            appointmentObject = [self _eventObjectWithUID:[event uid]];
+
           // Create the appointment if it is not added to calendar yet
           if ([appointmentObject isKindOfClass: [NSException class]])
             {