[irc/rqf/shadowircd.git] / modules / m_invite.c

/*
 *  ircd-ratbox: A slightly useful ircd.
 *  m_invite.c: Invites the user to join a channel.
 *
 *  Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
 *  Copyright (C) 1996-2002 Hybrid Development Team
 *  Copyright (C) 2002-2005 ircd-ratbox development team
 *
 *  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 2 of the License, 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *  USA
 *
 */

#include "stdinc.h"
#include "common.h"
#include "channel.h"
#include "client.h"
#include "hash.h"
#include "match.h"
#include "ircd.h"
#include "numeric.h"
#include "send.h"
#include "s_conf.h"
#include "s_serv.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"
#include "packet.h"
#include "tgchange.h"
#include "channel.h"

struct module_modes ModuleModes;

static int m_invite(struct Client *, struct Client *, int, const char **);

struct Message invite_msgtab = {
	"INVITE", 0, 0, 0, MFLG_SLOW,
	{mg_unreg, {m_invite, 3}, {m_invite, 3}, mg_ignore, mg_ignore, {m_invite, 3}}
};
mapi_clist_av1 invite_clist[] = { &invite_msgtab, NULL };
DECLARE_MODULE_AV1(invite, NULL, NULL, invite_clist, NULL, NULL, "$Revision: 3438 $");

static void add_invite(struct Channel *, struct Client *);

/* m_invite()
 *      parv[1] - user to invite
 *      parv[2] - channel name
 */
static int
m_invite(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
	struct Client *target_p;
	struct Channel *chptr;
	struct membership *msptr;
	int store_invite = 0;

	if(MyClient(source_p) && !IsFloodDone(source_p))
		flood_endgrace(source_p);

	if(MyClient(source_p))
		target_p = find_named_person(parv[1]);
	else
		target_p = find_person(parv[1]);
	if(target_p == NULL)
	{
		if(!MyClient(source_p) && IsDigit(parv[1][0]))
			sendto_one_numeric(source_p, ERR_NOSUCHNICK, 
					   "* :Target left IRC. Failed to invite to %s", 
					   parv[2]);
		else
			sendto_one_numeric(source_p, ERR_NOSUCHNICK, 
					   form_str(ERR_NOSUCHNICK), 
					   parv[1]);
		return 0;
	}

	if(check_channel_name(parv[2]) == 0)
	{
		sendto_one_numeric(source_p, ERR_BADCHANNAME,
				   form_str(ERR_BADCHANNAME),
				   parv[2]);
		return 0;
	}

	if(!IsChannelName(parv[2]))
	{
		if(MyClient(source_p))
			sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
					   form_str(ERR_NOSUCHCHANNEL), parv[2]);
		return 0;
	}

	/* Do not send local channel invites to users if they are not on the
	 * same server as the person sending the INVITE message. 
	 */
	if(parv[2][0] == '&' && !MyConnect(target_p))
	{
		sendto_one(source_p, form_str(ERR_USERNOTONSERV),
			   me.name, source_p->name, target_p->name);
		return 0;
	}

	if(((MyConnect(source_p) && !IsExemptResv(source_p)) ||
			(MyConnect(target_p) && !IsExemptResv(target_p))) &&
		hash_find_resv(parv[2]))
	{
		sendto_one_numeric(source_p, ERR_BADCHANNAME,
				   form_str(ERR_BADCHANNAME),
				   parv[2]);
		return 0;
	}

	if((chptr = find_channel(parv[2])) == NULL)
	{
		sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
				   form_str(ERR_NOSUCHCHANNEL), parv[2]);
		return 0;
	}

	msptr = find_channel_membership(chptr, source_p);
	if(MyClient(source_p) && (msptr == NULL))
	{
		sendto_one_numeric(source_p, ERR_NOTONCHANNEL,
				   form_str(ERR_NOTONCHANNEL), parv[2]);
		return 0;
	}

	if(IsMember(target_p, chptr))
	{
		sendto_one_numeric(source_p, ERR_USERONCHANNEL,
				   form_str(ERR_USERONCHANNEL),
				   target_p->name, parv[2]);
		return 0;
	}

	/* unconditionally require ops, unless the channel is +g */
	/* treat remote clients as chanops */
	if(MyClient(source_p) && !is_any_op(msptr) &&
			!(chptr->mode.mode & ModuleModes.MODE_FREEINVITE))
	{
		if(IsOverride(source_p))
		{
			sendto_wallops_flags(UMODE_WALLOP, &me,
					"%s is overriding INVITE [%s] on [%s]",
					get_oper_name(source_p), target_p->name, chptr->chname);
			sendto_server(NULL, chptr, NOCAPS, NOCAPS,
					":%s WALLOPS :%s is overriding INVITE [%s] on [%s]",
					me.name, get_oper_name(source_p), target_p->name, chptr->chname);
		}
		else
		{
			sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
					me.name, source_p->name, parv[2]);
			return 0;
		}
	}

	if (IsSetNoInvite(target_p))
	{
		sendto_one_numeric(source_p, ERR_NOINVITE,
				form_str(ERR_NOINVITE),
				target_p->name);
		return 0;
	}

	/* store invites when they could affect the ability to join
	 * for +l/+j just check if the mode is set, this varies over time
	 */
	if(chptr->mode.mode & MODE_INVITEONLY ||
			(chptr->mode.mode & ModuleModes.MODE_REGONLY && EmptyString(target_p->user->suser)) ||
			chptr->mode.limit || chptr->mode.join_num)
		store_invite = 1;

	if(MyConnect(source_p))
	{
		if (ConfigFileEntry.target_change && !IsOper(source_p) &&
				!find_allowing_channel(source_p, target_p) &&
				!add_target(source_p, target_p))
		{
			sendto_one(source_p, form_str(ERR_TARGCHANGE),
				   me.name, source_p->name, target_p->name);
			return 0;
		}
		sendto_one(source_p, form_str(RPL_INVITING), 
			   me.name, source_p->name,
			   target_p->name, parv[2]);
		if(target_p->user->away)
			sendto_one_numeric(source_p, RPL_AWAY, form_str(RPL_AWAY),
					   target_p->name, target_p->user->away);
	}
	/* invite timestamp */
	else if(parc > 3 && !EmptyString(parv[3]))
	{
		/* this should never be less than */
		if(atol(parv[3]) > chptr->channelts)
			return 0;
	}

	if(MyConnect(target_p))
	{
		if(!IsOper(source_p) && (IsSetCallerId(target_p) ||
					(IsSetRegOnlyMsg(target_p) && !source_p->user->suser[0])) &&
				!accept_message(source_p, target_p))
		{
			if (IsSetRegOnlyMsg(target_p) && !source_p->user->suser[0])
			{
				sendto_one_numeric(source_p, ERR_NONONREG,
						form_str(ERR_NONONREG),
						target_p->name);
				return 0;
			}
			else
			{
				/* instead of sending RPL_UMODEGMSG,
				 * just let the invite through
				 */
				if((target_p->localClient->last_caller_id_time +
				    ConfigFileEntry.caller_id_wait) >= rb_current_time())
				{
					sendto_one_numeric(source_p, ERR_TARGUMODEG,
							   form_str(ERR_TARGUMODEG),
							   target_p->name);
					return 0;
				}
				target_p->localClient->last_caller_id_time = rb_current_time();
			}
		}
		add_reply_target(target_p, source_p);
		sendto_one(target_p, ":%s!%s@%s INVITE %s :%s", 
			   source_p->name, source_p->username, source_p->host, 
			   target_p->name, chptr->chname);

		if(store_invite)
			add_invite(chptr, target_p);
	}
	else if(target_p->from != client_p)
	{
		sendto_one_prefix(target_p, source_p, "INVITE", "%s %lu",
				  chptr->chname, (unsigned long) chptr->channelts);
	}

	return 0;
}

/* add_invite()
 *
 * input	- channel to add invite to, client to add
 * output	-
 * side effects - client is added to invite list.
 */
static void
add_invite(struct Channel *chptr, struct Client *who)
{
	rb_dlink_node *ptr;

	/* already invited? */
	RB_DLINK_FOREACH(ptr, who->user->invited.head)
	{
		if(ptr->data == chptr)
			return;
	}

	/* ok, if their invite list is too long, remove the tail */
	if((int)rb_dlink_list_length(&who->user->invited) >= 
	   ConfigChannel.max_chans_per_user)
	{
		ptr = who->user->invited.tail;
		del_invite(ptr->data, who);
	}

	/* add user to channel invite list */
	rb_dlinkAddAlloc(who, &chptr->invites);

	/* add channel to user invite list */
	rb_dlinkAddAlloc(chptr, &who->user->invited);
}
Commit	Line	Data
212380e3	1	/*
	2	* ircd-ratbox: A slightly useful ircd.
	3	* m_invite.c: Invites the user to join a channel.
	4	*
	5	* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
	6	* Copyright (C) 1996-2002 Hybrid Development Team
	7	* Copyright (C) 2002-2005 ircd-ratbox development team
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 2 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
	22	* USA
	23	*
212380e3	24	*/
	25
	26	#include "stdinc.h"
212380e3	27	#include "common.h"
	28	#include "channel.h"
	29	#include "client.h"
	30	#include "hash.h"
13ae2f4b	31	#include "match.h"
212380e3	32	#include "ircd.h"
	33	#include "numeric.h"
	34	#include "send.h"
	35	#include "s_conf.h"
	36	#include "s_serv.h"
	37	#include "msg.h"
	38	#include "parse.h"
	39	#include "modules.h"
	40	#include "packet.h"
3f76eb8a	41	#include "tgchange.h"
1fe75e33 G	42	#include "channel.h"
	43
	44	struct module_modes ModuleModes;
212380e3	45
	46	static int m_invite(struct Client , struct Client , int, const char **);
	47
	48	struct Message invite_msgtab = {
	49	"INVITE", 0, 0, 0, MFLG_SLOW,
	50	{mg_unreg, {m_invite, 3}, {m_invite, 3}, mg_ignore, mg_ignore, {m_invite, 3}}
	51	};
	52	mapi_clist_av1 invite_clist[] = { &invite_msgtab, NULL };
0482ebf7	53	DECLARE_MODULE_AV1(invite, NULL, NULL, invite_clist, NULL, NULL, "$Revision: 3438 $");
212380e3	54
	55	static void add_invite(struct Channel , struct Client );
	56
	57	/* m_invite()
212380e3	58	* parv[1] - user to invite
	59	* parv[2] - channel name
	60	*/
	61	static int
	62	m_invite(struct Client client_p, struct Client source_p, int parc, const char *parv[])
	63	{
	64	struct Client *target_p;
	65	struct Channel *chptr;
	66	struct membership *msptr;
	67	int store_invite = 0;
	68
	69	if(MyClient(source_p) && !IsFloodDone(source_p))
	70	flood_endgrace(source_p);
	71
3499aa48 JT	72	if(MyClient(source_p))
	73	target_p = find_named_person(parv[1]);
	74	else
	75	target_p = find_person(parv[1]);
	76	if(target_p == NULL)
212380e3	77	{
0482ebf7	78	if(!MyClient(source_p) && IsDigit(parv[1][0]))
	79	sendto_one_numeric(source_p, ERR_NOSUCHNICK,
	80	"* :Target left IRC. Failed to invite to %s",
	81	parv[2]);
	82	else
	83	sendto_one_numeric(source_p, ERR_NOSUCHNICK,
	84	form_str(ERR_NOSUCHNICK),
	85	parv[1]);
212380e3	86	return 0;
	87	}
	88
	89	if(check_channel_name(parv[2]) == 0)
	90	{
	91	sendto_one_numeric(source_p, ERR_BADCHANNAME,
	92	form_str(ERR_BADCHANNAME),
	93	parv[2]);
	94	return 0;
	95	}
	96
	97	if(!IsChannelName(parv[2]))
	98	{
	99	if(MyClient(source_p))
	100	sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
	101	form_str(ERR_NOSUCHCHANNEL), parv[2]);
	102	return 0;
	103	}
	104
	105	/* Do not send local channel invites to users if they are not on the
	106	* same server as the person sending the INVITE message.
	107	*/
	108	if(parv[2][0] == '&' && !MyConnect(target_p))
	109	{
	110	sendto_one(source_p, form_str(ERR_USERNOTONSERV),
	111	me.name, source_p->name, target_p->name);
	112	return 0;
	113	}
	114
f47964e4 JT	115	if(((MyConnect(source_p) && !IsExemptResv(source_p)) \|\|
	116	(MyConnect(target_p) && !IsExemptResv(target_p))) &&
	117	hash_find_resv(parv[2]))
	118	{
	119	sendto_one_numeric(source_p, ERR_BADCHANNAME,
	120	form_str(ERR_BADCHANNAME),
	121	parv[2]);
	122	return 0;
	123	}
	124
212380e3	125	if((chptr = find_channel(parv[2])) == NULL)
	126	{
	127	sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
	128	form_str(ERR_NOSUCHCHANNEL), parv[2]);
	129	return 0;
	130	}
	131
	132	msptr = find_channel_membership(chptr, source_p);
	133	if(MyClient(source_p) && (msptr == NULL))
	134	{
	135	sendto_one_numeric(source_p, ERR_NOTONCHANNEL,
	136	form_str(ERR_NOTONCHANNEL), parv[2]);
	137	return 0;
	138	}
	139
	140	if(IsMember(target_p, chptr))
	141	{
	142	sendto_one_numeric(source_p, ERR_USERONCHANNEL,
	143	form_str(ERR_USERONCHANNEL),
	144	target_p->name, parv[2]);
	145	return 0;
	146	}
	147
307328bb	148	/* unconditionally require ops, unless the channel is +g */
307328bb	149	/* treat remote clients as chanops */
fbd2e5da	150	if(MyClient(source_p) && !is_any_op(msptr) &&
1fe75e33	151	!(chptr->mode.mode & ModuleModes.MODE_FREEINVITE))
212380e3	152	{
fbd2e5da	153	if(IsOverride(source_p))
34d8ef4d JH	154	{
34d8ef4d JH	155	sendto_wallops_flags(UMODE_WALLOP, &me,
fbd2e5da JH	156	"%s is overriding INVITE [%s] on [%s]",
fbd2e5da JH	157	get_oper_name(source_p), target_p->name, chptr->chname);
34d8ef4d JH	158	sendto_server(NULL, chptr, NOCAPS, NOCAPS,
34d8ef4d JH	159	":%s WALLOPS :%s is overriding INVITE [%s] on [%s]",
71ea6069	160	me.name, get_oper_name(source_p), target_p->name, chptr->chname);
34d8ef4d	161	}
fbd2e5da JH	162	else
	163	{
	164	sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
	165	me.name, source_p->name, parv[2]);
	166	return 0;
	167	}
212380e3	168	}
212380e3	169
854f6bd0 G	170	if (IsSetNoInvite(target_p))
	171	{
	172	sendto_one_numeric(source_p, ERR_NOINVITE,
	173	form_str(ERR_NOINVITE),
	174	target_p->name);
	175	return 0;
	176	}
	177
1ebf4db4	178	/* store invites when they could affect the ability to join
	179	* for +l/+j just check if the mode is set, this varies over time
	180	*/
	181	if(chptr->mode.mode & MODE_INVITEONLY \|\|
1fe75e33	182	(chptr->mode.mode & ModuleModes.MODE_REGONLY && EmptyString(target_p->user->suser)) \|\|
1ebf4db4	183	chptr->mode.limit \|\| chptr->mode.join_num)
307328bb	184	store_invite = 1;
307328bb	185
212380e3	186	if(MyConnect(source_p))
212380e3	187	{
3f76eb8a JT	188	if (ConfigFileEntry.target_change && !IsOper(source_p) &&
	189	!find_allowing_channel(source_p, target_p) &&
	190	!add_target(source_p, target_p))
	191	{
	192	sendto_one(source_p, form_str(ERR_TARGCHANGE),
	193	me.name, source_p->name, target_p->name);
0f18c084	194	return 0;
3f76eb8a	195	}
212380e3	196	sendto_one(source_p, form_str(RPL_INVITING),
	197	me.name, source_p->name,
	198	target_p->name, parv[2]);
c387fc41	199	if(target_p->user->away)
212380e3	200	sendto_one_numeric(source_p, RPL_AWAY, form_str(RPL_AWAY),
c387fc41	201	target_p->name, target_p->user->away);
212380e3	202	}
	203	/* invite timestamp */
	204	else if(parc > 3 && !EmptyString(parv[3]))
	205	{
	206	/* this should never be less than */
	207	if(atol(parv[3]) > chptr->channelts)
	208	return 0;
	209	}
	210
	211	if(MyConnect(target_p))
	212	{
625a2b1f JT	213	if(!IsOper(source_p) && (IsSetCallerId(target_p) \|\|
	214	(IsSetRegOnlyMsg(target_p) && !source_p->user->suser[0])) &&
	215	!accept_message(source_p, target_p))
	216	{
	217	if (IsSetRegOnlyMsg(target_p) && !source_p->user->suser[0])
	218	{
	219	sendto_one_numeric(source_p, ERR_NONONREG,
	220	form_str(ERR_NONONREG),
	221	target_p->name);
	222	return 0;
	223	}
	224	else
	225	{
	226	/* instead of sending RPL_UMODEGMSG,
	227	* just let the invite through
	228	*/
	229	if((target_p->localClient->last_caller_id_time +
	230	ConfigFileEntry.caller_id_wait) >= rb_current_time())
	231	{
	232	sendto_one_numeric(source_p, ERR_TARGUMODEG,
	233	form_str(ERR_TARGUMODEG),
	234	target_p->name);
	235	return 0;
	236	}
	237	target_p->localClient->last_caller_id_time = rb_current_time();
	238	}
	239	}
3f76eb8a	240	add_reply_target(target_p, source_p);
212380e3	241	sendto_one(target_p, ":%s!%s@%s INVITE %s :%s",
	242	source_p->name, source_p->username, source_p->host,
	243	target_p->name, chptr->chname);
	244
	245	if(store_invite)
	246	add_invite(chptr, target_p);
	247	}
	248	else if(target_p->from != client_p)
	249	{
	250	sendto_one_prefix(target_p, source_p, "INVITE", "%s %lu",
	251	chptr->chname, (unsigned long) chptr->channelts);
	252	}
	253
	254	return 0;
	255	}
	256
	257	/* add_invite()
	258	*
	259	* input - channel to add invite to, client to add
	260	* output -
	261	* side effects - client is added to invite list.
	262	*/
	263	static void
	264	add_invite(struct Channel chptr, struct Client who)
	265	{
08d11e34	266	rb_dlink_node *ptr;
212380e3	267
212380e3	268	/* already invited? */
08d11e34	269	RB_DLINK_FOREACH(ptr, who->user->invited.head)
212380e3	270	{
	271	if(ptr->data == chptr)
	272	return;
	273	}
	274
	275	/* ok, if their invite list is too long, remove the tail */
08d11e34	276	if((int)rb_dlink_list_length(&who->user->invited) >=
212380e3	277	ConfigChannel.max_chans_per_user)
	278	{
	279	ptr = who->user->invited.tail;
	280	del_invite(ptr->data, who);
	281	}
	282
	283	/* add user to channel invite list */
7f4fa195	284	rb_dlinkAddAlloc(who, &chptr->invites);
212380e3	285
212380e3	286	/* add channel to user invite list */
7f4fa195	287	rb_dlinkAddAlloc(chptr, &who->user->invited);
212380e3	288	}
	289
	290