Add chmode +T, which blocks notices.

help/opers/cmode

@@ -28,6 +28,7 @@ NO PARAMETERS:
               (however, new forwards can still be set subject to +F).
      +C     - Disable CTCP. All CTCP messages to the channel, except ACTION,
               are disallowed.
+     +T     - Disable notice. All notices to the channel are disallowed.
 
 WITH PARAMETERS:
      +f     - Forward.  Forwards users who cannot join because of +i,

include/channel.h

@@ -172,6 +172,7 @@ typedef int (*ExtbanFunc)(const char *data, struct Client *client_p,
 #define MODE_FREETARGET 0x1000  /* can be forwarded to without authorization */
 #define MODE_DISFORWARD 0x2000  /* disable channel forwarding */
 #define MODE_NOCTCP     0x8000  /* Block CTCPs directed to this channel */
+#define MODE_NONOTICE	0x16000	/* Block notices directed to this channel */
 
 #define CHFL_BAN        0x10000000	/* ban channel flag */
 #define CHFL_EXCEPTION  0x20000000	/* exception to ban channel flag */

modules/core/m_message.c

@@ -513,6 +513,12 @@ msg_channel(int p_or_n, const char *command,
 		if(result == CAN_SEND_OPV ||
 		   !flood_attack_channel(p_or_n, source_p, chptr, chptr->chname))
 		{
+			if (p_or_n != PRIVMSG && chptr->mode.mode & MODE_NONOTICE)
+			{
+				sendto_one_numeric(source_p, ERR_CANNOTSENDTOCHAN,
+						form_str(ERR_CANNOTSENDTOCHAN), chptr->chname);
+				return;
+			}
 			if (p_or_n != NOTICE && *text == '\001' &&
 					strncasecmp(text + 1, "ACTION", 6))
 			{

src/chmode.c

@@ -1416,7 +1416,7 @@ struct ChannelMode chmode_table[256] =
   {chm_simple,	MODE_DISFORWARD },	/* Q */
   {chm_nosuch,	0 },			/* R */
   {chm_nosuch,	0 },			/* S */
-  {chm_nosuch,	0 },			/* T */
+  {chm_simple,	MODE_NONOTICE },	/* T */
   {chm_nosuch,	0 },			/* U */
   {chm_nosuch,	0 },			/* V */
   {chm_nosuch,	0 },			/* W */