[solanum.git] / modules / um_regonlymsg.c

/*
 * modules/um_regonlymsg.c
 * Copyright (c) 2020 Ariadne Conill <ariadne@dereferenced.org>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * 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 "hash.h"
#include "s_conf.h"
#include "s_user.h"
#include "s_serv.h"
#include "numeric.h"
#include "privilege.h"
#include "s_newconf.h"
#include "logger.h"

static int
um_regonlymsg_modinit(void)
{
	user_modes['R'] = find_umode_slot();
	construct_umodebuf();

	if (!user_modes['R'])
	{
		ierror("um_regonlymsg: unable to allocate usermode slot for +R, unloading module");
		return -1;
	}

	return 0;
}

static void
um_regonlymsg_moddeinit(void)
{
	user_modes['R'] = 0;
	construct_umodebuf();
}

#define IsSetRegOnlyMsg(c)	((c->umodes & user_modes['R']) == user_modes['R'])

static const char um_regonlymsg_desc[] =
	"Provides usermode +R which restricts messages from unregistered users.";

static bool
allow_message(struct Client *source_p, struct Client *target_p)
{
	if (!MyClient(target_p))
		return true;

	if (!IsSetRegOnlyMsg(target_p))
		return true;

	if (IsServer(source_p))
		return true;

	/* XXX: controversial?  allow opers to send through +R */
	if (IsOper(source_p))
		return true;

	if (accept_message(source_p, target_p))
		return true;

	if (source_p->user->suser[0])
		return true;

	return false;
}

static void
h_hdl_invite(void *vdata)
{
	hook_data_channel_approval *data = vdata;
	struct Client *source_p = data->client;
	struct Client *target_p = data->target;

	if (data->approved)
		return;

	if (allow_message(source_p, target_p))
		return;

	sendto_one_numeric(source_p, ERR_NONONREG, form_str(ERR_NONONREG),
			   target_p->name);

	data->approved = ERR_NONONREG;
}

static void
h_hdl_privmsg_user(void *vdata)
{
	hook_data_privmsg_user *data = vdata;
	struct Client *source_p = data->source_p;
	struct Client *target_p = data->target_p;

	if (data->approved)
		return;

	if (allow_message(source_p, target_p))
		return;

	if (data->msgtype == MESSAGE_TYPE_NOTICE)
		return;

	sendto_one_numeric(source_p, ERR_NONONREG, form_str(ERR_NONONREG),
			   target_p->name);

	data->approved = ERR_NONONREG;
}

static mapi_hfn_list_av1 um_regonlymsg_hfnlist[] = {
	{ "invite", h_hdl_invite },
	{ "privmsg_user", h_hdl_privmsg_user },
	{ NULL, NULL }
};

DECLARE_MODULE_AV2(um_regonlymsg, um_regonlymsg_modinit, um_regonlymsg_moddeinit,
		   NULL, NULL, um_regonlymsg_hfnlist, NULL, NULL, um_regonlymsg_desc);
Commit	Line	Data
968dee68 AC	1	/*
	2	* modules/um_regonlymsg.c
	3	* Copyright (c) 2020 Ariadne Conill <ariadne@dereferenced.org>
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions are
	7	* met:
	8	*
	9	* 1. Redistributions of source code must retain the above copyright notice,
	10	* this list of conditions and the following disclaimer.
	11	* 2. Redistributions in binary form must reproduce the above copyright
	12	* notice, this list of conditions and the following disclaimer in the
	13	* documentation and/or other materials provided with the distribution.
	14	* 3. The name of the author may not be used to endorse or promote products
	15	* derived from this software without specific prior written permission.
	16	*
	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
	19	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	20	* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
	21	* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
	22	* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
	23	* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	24	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	25	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
	26	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	27	* POSSIBILITY OF SUCH DAMAGE.
	28	*/
	29
	30	#include "stdinc.h"
	31	#include "modules.h"
	32	#include "hook.h"
	33	#include "client.h"
	34	#include "ircd.h"
	35	#include "send.h"
	36	#include "hash.h"
	37	#include "s_conf.h"
	38	#include "s_user.h"
	39	#include "s_serv.h"
	40	#include "numeric.h"
	41	#include "privilege.h"
	42	#include "s_newconf.h"
2bbfce68	43	#include "logger.h"
968dee68 AC	44
	45	static int
	46	um_regonlymsg_modinit(void)
	47	{
	48	user_modes['R'] = find_umode_slot();
	49	construct_umodebuf();
	50
2bbfce68 AC	51	if (!user_modes['R'])
	52	{
	53	ierror("um_regonlymsg: unable to allocate usermode slot for +R, unloading module");
	54	return -1;
	55	}
	56
968dee68 AC	57	return 0;
	58	}
	59
	60	static void
	61	um_regonlymsg_moddeinit(void)
	62	{
	63	user_modes['R'] = 0;
	64	construct_umodebuf();
	65	}
	66
	67	#define IsSetRegOnlyMsg(c) ((c->umodes & user_modes['R']) == user_modes['R'])
	68
	69	static const char um_regonlymsg_desc[] =
	70	"Provides usermode +R which restricts messages from unregistered users.";
	71
	72	static bool
	73	allow_message(struct Client source_p, struct Client target_p)
	74	{
4436a7ca AC	75	if (!MyClient(target_p))
	76	return true;
	77
968dee68	78	if (!IsSetRegOnlyMsg(target_p))
dc5d1d01	79	return true;
968dee68 AC	80
968dee68 AC	81	if (IsServer(source_p))
dc5d1d01	82	return true;
968dee68 AC	83
	84	/* XXX: controversial? allow opers to send through +R */
	85	if (IsOper(source_p))
dc5d1d01	86	return true;
968dee68 AC	87
968dee68 AC	88	if (accept_message(source_p, target_p))
dc5d1d01	89	return true;
968dee68 AC	90
968dee68 AC	91	if (source_p->user->suser[0])
dc5d1d01	92	return true;
968dee68	93
dc5d1d01	94	return false;
968dee68 AC	95	}
	96
	97	static void
daaf127d	98	h_hdl_invite(void *vdata)
968dee68 AC	99	{
	100	hook_data_channel_approval *data = vdata;
	101	struct Client *source_p = data->client;
	102	struct Client *target_p = data->target;
	103
90e99760 AC	104	if (data->approved)
	105	return;
	106
968dee68 AC	107	if (allow_message(source_p, target_p))
	108	return;
	109
	110	sendto_one_numeric(source_p, ERR_NONONREG, form_str(ERR_NONONREG),
	111	target_p->name);
	112
	113	data->approved = ERR_NONONREG;
	114	}
	115
	116	static void
	117	h_hdl_privmsg_user(void *vdata)
	118	{
	119	hook_data_privmsg_user *data = vdata;
	120	struct Client *source_p = data->source_p;
	121	struct Client *target_p = data->target_p;
	122
90e99760 AC	123	if (data->approved)
	124	return;
	125
968dee68 AC	126	if (allow_message(source_p, target_p))
	127	return;
	128
	129	if (data->msgtype == MESSAGE_TYPE_NOTICE)
	130	return;
	131
	132	sendto_one_numeric(source_p, ERR_NONONREG, form_str(ERR_NONONREG),
	133	target_p->name);
	134
	135	data->approved = ERR_NONONREG;
	136	}
	137
	138	static mapi_hfn_list_av1 um_regonlymsg_hfnlist[] = {
daaf127d	139	{ "invite", h_hdl_invite },
968dee68 AC	140	{ "privmsg_user", h_hdl_privmsg_user },
	141	{ NULL, NULL }
	142	};
	143
	144	DECLARE_MODULE_AV2(um_regonlymsg, um_regonlymsg_modinit, um_regonlymsg_moddeinit,
	145	NULL, NULL, um_regonlymsg_hfnlist, NULL, NULL, um_regonlymsg_desc);