From 2f469835d959326c4a30e10227e345121a89a779 Mon Sep 17 00:00:00 2001
From: lilia <liliakai@gmail.com>
Date: Thu, 3 Dec 2015 18:48:04 -0800
Subject: [PATCH] Handle group quit sync messages

Previously, we would incorrectly reject group updates originating from a
linked device instructing us to remove ourselves from the group.

// FREEBIE
---
 js/libtextsecure.js               | 8 ++++++--
 js/models/messages.js             | 6 +++++-
 libtextsecure/message_receiver.js | 8 ++++++--
 3 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/js/libtextsecure.js b/js/libtextsecure.js
index fdc526b2..19f3a687 100644
--- a/js/libtextsecure.js
+++ b/js/libtextsecure.js
@@ -37062,7 +37062,11 @@ MessageReceiver.prototype = {
                     case textsecure.protobuf.GroupContext.Type.QUIT:
                         decrypted.body = null;
                         decrypted.attachments = [];
-                        return textsecure.storage.groups.removeNumber(decrypted.group.id, source);
+                        if (source === this.number) {
+                            return textsecure.storage.groups.deleteGroup(decrypted.group.id);
+                        } else {
+                            return textsecure.storage.groups.removeNumber(decrypted.group.id, source);
+                        }
                     case textsecure.protobuf.GroupContext.Type.DELIVER:
                         decrypted.group.name = null;
                         decrypted.group.members = [];
@@ -37073,7 +37077,7 @@ MessageReceiver.prototype = {
                         throw new Error("Unknown group message type");
                     }
                 }
-            }));
+            }.bind(this)));
         }
 
         for (var i in decrypted.attachments) {
diff --git a/js/models/messages.js b/js/models/messages.js
index 061ddfd3..1f85fd99 100644
--- a/js/models/messages.js
+++ b/js/models/messages.js
@@ -280,7 +280,11 @@
                         }
                     }
                     else if (dataMessage.group.type === textsecure.protobuf.GroupContext.Type.QUIT) {
-                        group_update = { left: source };
+                        if (source == textsecure.storage.user.getNumber()) {
+                            group_update = { left: "You" };
+                        } else {
+                            group_update = { left: source };
+                        }
                         attributes.members = _.without(conversation.get('members'), source);
                     }
 
diff --git a/libtextsecure/message_receiver.js b/libtextsecure/message_receiver.js
index f2ca08f7..4b70fdc2 100644
--- a/libtextsecure/message_receiver.js
+++ b/libtextsecure/message_receiver.js
@@ -331,7 +331,11 @@ MessageReceiver.prototype = {
                     case textsecure.protobuf.GroupContext.Type.QUIT:
                         decrypted.body = null;
                         decrypted.attachments = [];
-                        return textsecure.storage.groups.removeNumber(decrypted.group.id, source);
+                        if (source === this.number) {
+                            return textsecure.storage.groups.deleteGroup(decrypted.group.id);
+                        } else {
+                            return textsecure.storage.groups.removeNumber(decrypted.group.id, source);
+                        }
                     case textsecure.protobuf.GroupContext.Type.DELIVER:
                         decrypted.group.name = null;
                         decrypted.group.members = [];
@@ -342,7 +346,7 @@ MessageReceiver.prototype = {
                         throw new Error("Unknown group message type");
                     }
                 }
-            }));
+            }.bind(this)));
         }
 
         for (var i in decrypted.attachments) {