From 9ef1ad0b6e44c2e41c2086e70253cbf5538b90c6 Mon Sep 17 00:00:00 2001
From: iulianlaz <iulianlaz@gmail.com>
Date: Thu, 6 Mar 2014 08:40:38 +0000
Subject: [PATCH] #148 Carbon copy sends message back to original sender solved

---
 src/mod_carboncopy.erl | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/mod_carboncopy.erl b/src/mod_carboncopy.erl
index cc5cb83b0..ac1a1ef56 100644
--- a/src/mod_carboncopy.erl
+++ b/src/mod_carboncopy.erl
@@ -151,7 +151,19 @@ check_and_forward(JID, #xmlel{name = <<"message">>, attrs = Attrs} = Packet, Dir
 	    false ->
 		case xml:get_subtag(Packet,<<"received">>) of
 		    false ->
-			send_copies(JID, Packet, Direction);
+		    	%% We must check if a packet contains "<sent><forwarded></sent></forwarded>" tags in order to avoid
+                    	%% receiving message back to original sender.
+                    	SubTag = xml:get_subtag(Packet,<<"sent">>),
+                    	if SubTag == false ->
+                            send_copies(JID, Packet, Direction);
+                       	   true ->
+                            case xml:get_subtag(SubTag,<<"forwarded">>) of
+                                false->
+                                    send_copies(JID, Packet, Direction);
+                                _ ->
+                                    stop
+                            end
+                    	end; 
 		    _ ->
 			%% stop the hook chain, we don't want mod_logdb to register this message (duplicate)
 			stop