From 33a01c05128f5296d6a9b7a09426801df5a3384b Mon Sep 17 00:00:00 2001
From: Kyle Spearrin <kyle.spearrin@gmail.com>
Date: Sat, 6 Aug 2016 01:48:24 -0400
Subject: [PATCH] Since a sync operation is running on a background thread and
 is long-running, it is possible someone could log out during its processing.
 Do some auth checking during the loops process.

---
 src/App/Services/SyncService.cs | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/src/App/Services/SyncService.cs b/src/App/Services/SyncService.cs
index 5c14b06bd..8d2977255 100644
--- a/src/App/Services/SyncService.cs
+++ b/src/App/Services/SyncService.cs
@@ -224,10 +224,19 @@ namespace Bit.App.Services
 
         private async Task SyncFoldersAsync(IEnumerable<CipherResponse> serverFolders, bool deleteMissing)
         {
+            if(!_authService.IsAuthenticated)
+            {
+                return;
+            }
             var localFolders = await _folderRepository.GetAllByUserIdAsync(_authService.UserId);
 
             foreach(var serverFolder in serverFolders)
             {
+                if(!_authService.IsAuthenticated)
+                {
+                    return;
+                }
+
                 var existingLocalFolder = localFolders.SingleOrDefault(f => f.Id == serverFolder.Id);
                 if(existingLocalFolder == null)
                 {
@@ -254,10 +263,20 @@ namespace Bit.App.Services
 
         private async Task SyncSitesAsync(IEnumerable<CipherResponse> serverSites, bool deleteMissing)
         {
+            if(!_authService.IsAuthenticated)
+            {
+                return;
+            }
+
             var localSites = await _siteRepository.GetAllByUserIdAsync(_authService.UserId);
 
             foreach(var serverSite in serverSites)
             {
+                if(!_authService.IsAuthenticated)
+                {
+                    return;
+                }
+
                 var existingLocalSite = localSites.SingleOrDefault(s => s.Id == serverSite.Id);
                 if(existingLocalSite == null)
                 {
@@ -287,6 +306,11 @@ namespace Bit.App.Services
             var tasks = new List<Task>();
             foreach(var cipherId in cipherIds)
             {
+                if(!_authService.IsAuthenticated)
+                {
+                    return;
+                }
+
                 tasks.Add(_siteRepository.DeleteAsync(cipherId));
                 tasks.Add(_folderRepository.DeleteAsync(cipherId));
             }