From 074fd14849a37863274cbc4cb83eaf70c9720080 Mon Sep 17 00:00:00 2001
From: Moxie Marlinspike <moxie@thoughtcrime.org>
Date: Thu, 16 Mar 2017 22:13:17 -0700
Subject: [PATCH] Don't write to account db if gcm id is same

// FREEBIE
---
 .../textsecuregcm/controllers/AccountController.java       | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/main/java/org/whispersystems/textsecuregcm/controllers/AccountController.java b/src/main/java/org/whispersystems/textsecuregcm/controllers/AccountController.java
index d999f6da3..9d1bd5554 100644
--- a/src/main/java/org/whispersystems/textsecuregcm/controllers/AccountController.java
+++ b/src/main/java/org/whispersystems/textsecuregcm/controllers/AccountController.java
@@ -252,6 +252,13 @@ public class AccountController {
   @Consumes(MediaType.APPLICATION_JSON)
   public void setGcmRegistrationId(@Auth Account account, @Valid GcmRegistrationId registrationId) {
     Device device = account.getAuthenticatedDevice().get();
+
+    if (device.getGcmId() != null &&
+        device.getGcmId().equals(registrationId.getGcmRegistrationId()))
+    {
+      return;
+    }
+
     device.setApnId(null);
     device.setVoipApnId(null);
     device.setGcmId(registrationId.getGcmRegistrationId());