From 973ac25a4aa5715a4e196f0df56eaadb6ef1aaac Mon Sep 17 00:00:00 2001
From: codemastr <devnull@localhost>
Date: Thu, 8 Jan 2004 16:51:29 +0000
Subject: [PATCH] Made CmodeAdd return MODERR_EXISTS if the mode already exists

---
 Changes         | 1 +
 src/extcmodes.c | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/Changes b/Changes
index c5ab194ec..c938f5976 100644
--- a/Changes
+++ b/Changes
@@ -2699,3 +2699,4 @@ seen. gmtime warning still there
 - Fixed a compile problem reported by ace (#0001474)
 - Added an EXTBAN 005 token (see doc/technical/005.txt for info)
 - Fixed a bug with the dynamic umode and cmode systems
+- Made CmodeAdd return MODERR_EXISTS if the mode already exists
diff --git a/src/extcmodes.c b/src/extcmodes.c
index 032908970..25714e0bf 100644
--- a/src/extcmodes.c
+++ b/src/extcmodes.c
@@ -120,6 +120,12 @@ Cmode *CmodeAdd(Module *reserved, CmodeInfo req, Cmode_t *mode)
 	{
 		if (!Channelmode_Table[i].flag)
 			break;
+		else if (Channelmode_Table[i].flag == req.flag)
+		{
+			if (reserved)
+				reserved->errorcode = MODERR_EXISTS;
+			return NULL;
+		}
 		i++;
 	}
 	if (i == EXTCMODETABLESZ)