/*
 * "No Codes", a very simple (but often requested) module written by Syzop.
 * This module will strip messages with bold/underline/reverse if chanmode
 * +S is set, and block them if +c is set.
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 1, or (at your option)
 *   any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "unrealircd.h"

#define NOCODES_VERSION "v1.2"

ModuleHeader MOD_HEADER(nocodes)
= {
	"nocodes",	/* Name of module */
	NOCODES_VERSION, /* Version */
	"Strip/block bold/underline/reverse - by Syzop", /* Short description of module */
	"3.2-b8-1",
	NULL 
};

char *nocodes_pre_chanmsg(aClient *sptr, aChannel *chptr, MessageTag *mtags, char *text, int notice);

MOD_INIT(nocodes)
{
	MARK_AS_OFFICIAL_MODULE(modinfo);

	HookAddPChar(modinfo->handle, HOOKTYPE_PRE_CHANMSG, 0, nocodes_pre_chanmsg);
	return MOD_SUCCESS;
}

MOD_LOAD(m_dummy)
{
	return MOD_SUCCESS;
}

MOD_UNLOAD(m_dummy)
{
	return MOD_SUCCESS;
}

static int has_controlcodes(char *p)
{
	for (; *p; p++)
		if ((*p == '\002') || (*p == '\037') || (*p == '\026') || (*p == '\035')) /* bold, underline, reverse, italic */
			return 1;
	return 0;
}

char *nocodes_pre_chanmsg(aClient *sptr, aChannel *chptr, MessageTag *mtags, char *text, int notice)
{
	static char retbuf[4096];
	Hook *h;
	int i;

	if (has_channel_mode(chptr, 'S'))
	{
		for (h = Hooks[HOOKTYPE_CAN_BYPASS_CHANNEL_MESSAGE_RESTRICTION]; h; h = h->next)
		{
			i = (*(h->func.intfunc))(sptr, chptr, BYPASS_CHANMSG_COLOR);
			if (i != HOOK_CONTINUE)
				break;
		}
		if (i == HOOK_ALLOW)
			return text; /* bypass */

		strlcpy(retbuf, StripControlCodes(text), sizeof(retbuf));
		return retbuf;
	} else
	if (has_channel_mode(chptr, 'c'))
	{
		if (has_controlcodes(text))
		{
			for (h = Hooks[HOOKTYPE_CAN_BYPASS_CHANNEL_MESSAGE_RESTRICTION]; h; h = h->next)
			{
				i = (*(h->func.intfunc))(sptr, chptr, BYPASS_CHANMSG_COLOR);
				if (i != HOOK_CONTINUE)
					break;
			}
			if (i == HOOK_ALLOW)
				return text; /* bypass */

			sendnumeric(sptr, ERR_CANNOTSENDTOCHAN, chptr->chname,
				"Control codes (bold/underline/reverse) are not permitted in this channel",
				chptr->chname);
			return NULL;
		} else
			return text;
	} else
		return text;
}