From bfb2f64ea480a35c973362f014e1caee7918b713 Mon Sep 17 00:00:00 2001
From: Luke Pulverenti <luke.pulverenti@gmail.com>
Date: Fri, 23 Sep 2016 02:20:56 -0400
Subject: check against repeat programs

---
 .../Connect/ConnectManager.cs                      | 22 ++++++++++++++--------
 1 file changed, 14 insertions(+), 8 deletions(-)

(limited to 'MediaBrowser.Server.Implementations/Connect')

diff --git a/MediaBrowser.Server.Implementations/Connect/ConnectManager.cs b/MediaBrowser.Server.Implementations/Connect/ConnectManager.cs
index e7e52a887..b2dd8ec86 100644
--- a/MediaBrowser.Server.Implementations/Connect/ConnectManager.cs
+++ b/MediaBrowser.Server.Implementations/Connect/ConnectManager.cs
@@ -403,6 +403,14 @@ namespace MediaBrowser.Server.Implementations.Connect
 
         public async Task<UserLinkResult> LinkUser(string userId, string connectUsername)
         {
+            if (string.IsNullOrWhiteSpace(userId))
+            {
+                throw new ArgumentNullException("userId");
+            }
+            if (string.IsNullOrWhiteSpace(connectUsername))
+            {
+                throw new ArgumentNullException("connectUsername");
+            }
             if (string.IsNullOrWhiteSpace(ConnectServerId))
             {
                 await UpdateConnectInfo().ConfigureAwait(false);
@@ -422,14 +430,6 @@ namespace MediaBrowser.Server.Implementations.Connect
 
         private async Task<UserLinkResult> LinkUserInternal(string userId, string connectUsername)
         {
-            if (string.IsNullOrWhiteSpace(userId))
-            {
-                throw new ArgumentNullException("userId");
-            }
-            if (string.IsNullOrWhiteSpace(connectUsername))
-            {
-                throw new ArgumentNullException("connectUsername");
-            }
             if (string.IsNullOrWhiteSpace(ConnectServerId))
             {
                 throw new ArgumentNullException("ConnectServerId");
@@ -446,6 +446,12 @@ namespace MediaBrowser.Server.Implementations.Connect
                 throw new ArgumentException("The Emby account has been disabled.");
             }
 
+            var existingUser = _userManager.Users.FirstOrDefault(i => string.Equals(i.ConnectUserId, connectUser.Id) && !string.IsNullOrWhiteSpace(i.ConnectAccessKey));
+            if (existingUser != null)
+            {
+                throw new InvalidOperationException("This connect user is already linked to local user " + existingUser.Name);
+            }
+
             var user = GetUser(userId);
 
             if (!string.IsNullOrWhiteSpace(user.ConnectUserId))
-- 
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