[solanum.git] / modules / chm_noctcp.c

/*
 * Solanum: a slightly advanced ircd
 * chm_noctcp: block non-action CTCP (+C mode).
 *
 * Copyright (c) 2012 Ariadne Conill <ariadne@dereferenced.org>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice is present in all copies.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "stdinc.h"
#include "modules.h"
#include "hook.h"
#include "client.h"
#include "ircd.h"
#include "send.h"
#include "s_conf.h"
#include "s_user.h"
#include "s_serv.h"
#include "numeric.h"
#include "chmode.h"
#include "inline/stringops.h"

static const char chm_noctcp_desc[] =
	"Adds channel mode +C, which blocks CTCP messages from a channel (except ACTION)";

static unsigned int mode_noctcp;

static void chm_noctcp_process(void *);

mapi_hfn_list_av1 chm_noctcp_hfnlist[] = {
	{ "privmsg_channel", chm_noctcp_process },
	{ NULL, NULL }
};

static void
chm_noctcp_process(void *data_)
{
	hook_data_privmsg_channel *data = data_;
	/* don't waste CPU if message is already blocked */
	if (data->approved || data->msgtype == MESSAGE_TYPE_NOTICE)
		return;

	if (*data->text == '\001' && rb_strncasecmp(data->text + 1, "ACTION ", 7) && data->chptr->mode.mode & mode_noctcp)
	{
		sendto_one_numeric(data->source_p, ERR_CANNOTSENDTOCHAN, form_str(ERR_CANNOTSENDTOCHAN), data->chptr->chname);
		data->approved = ERR_CANNOTSENDTOCHAN;
		return;
	}
	else if (rb_dlink_list_length(&data->chptr->locmembers) > (unsigned)(GlobalSetOptions.floodcount / 2))
		data->source_p->large_ctcp_sent = rb_current_time();
}

static int
_modinit(void)
{
	mode_noctcp = cflag_add('C', chm_simple);
	if (mode_noctcp == 0)
		return -1;

	return 0;
}

static void
_moddeinit(void)
{
	cflag_orphan('C');
}

DECLARE_MODULE_AV2(chm_noctcp, _modinit, _moddeinit, NULL, NULL, chm_noctcp_hfnlist, NULL, NULL, chm_noctcp_desc);
Commit	Line	Data
f30a5ee4	1	/*
a6f63a82	2	* Solanum: a slightly advanced ircd
f30a5ee4 AC	3	* chm_noctcp: block non-action CTCP (+C mode).
f30a5ee4 AC	4	*
3fc0499e	5	* Copyright (c) 2012 Ariadne Conill <ariadne@dereferenced.org>
f30a5ee4 AC	6	*
	7	* Permission to use, copy, modify, and/or distribute this software for any
	8	* purpose with or without fee is hereby granted, provided that the above
	9	* copyright notice and this permission notice is present in all copies.
	10	*
	11	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	12	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
	13	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	14	* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
	15	* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
	16	* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
	17	* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	18	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	19	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
	20	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	21	* POSSIBILITY OF SUCH DAMAGE.
	22	*/
	23
	24	#include "stdinc.h"
	25	#include "modules.h"
	26	#include "hook.h"
	27	#include "client.h"
	28	#include "ircd.h"
	29	#include "send.h"
	30	#include "s_conf.h"
	31	#include "s_user.h"
	32	#include "s_serv.h"
	33	#include "numeric.h"
	34	#include "chmode.h"
	35	#include "inline/stringops.h"
	36
eeabf33a EM	37	static const char chm_noctcp_desc[] =
	38	"Adds channel mode +C, which blocks CTCP messages from a channel (except ACTION)";
	39
f30a5ee4 AC	40	static unsigned int mode_noctcp;
f30a5ee4 AC	41
82436efb	42	static void chm_noctcp_process(void *);
f30a5ee4 AC	43
f30a5ee4 AC	44	mapi_hfn_list_av1 chm_noctcp_hfnlist[] = {
82436efb	45	{ "privmsg_channel", chm_noctcp_process },
f30a5ee4 AC	46	{ NULL, NULL }
	47	};
	48
	49	static void
82436efb	50	chm_noctcp_process(void *data_)
f30a5ee4	51	{
82436efb	52	hook_data_privmsg_channel *data = data_;
f30a5ee4 AC	53	/* don't waste CPU if message is already blocked */
	54	if (data->approved \|\| data->msgtype == MESSAGE_TYPE_NOTICE)
	55	return;
	56
f956cb0f	57	if (*data->text == '\001' && rb_strncasecmp(data->text + 1, "ACTION ", 7) && data->chptr->mode.mode & mode_noctcp)
f30a5ee4 AC	58	{
	59	sendto_one_numeric(data->source_p, ERR_CANNOTSENDTOCHAN, form_str(ERR_CANNOTSENDTOCHAN), data->chptr->chname);
	60	data->approved = ERR_CANNOTSENDTOCHAN;
	61	return;
	62	}
	63	else if (rb_dlink_list_length(&data->chptr->locmembers) > (unsigned)(GlobalSetOptions.floodcount / 2))
	64	data->source_p->large_ctcp_sent = rb_current_time();
	65	}
	66
	67	static int
	68	_modinit(void)
	69	{
	70	mode_noctcp = cflag_add('C', chm_simple);
	71	if (mode_noctcp == 0)
	72	return -1;
	73
	74	return 0;
	75	}
	76
	77	static void
	78	_moddeinit(void)
	79	{
	80	cflag_orphan('C');
	81	}
	82
b212d713	83	DECLARE_MODULE_AV2(chm_noctcp, _modinit, _moddeinit, NULL, NULL, chm_noctcp_hfnlist, NULL, NULL, chm_noctcp_desc);