[solanum.git] / extensions / m_remove.c

/*
 *  ircd-ratbox: A slightly useful ircd.
 *  m_kick.c: Kicks a user from 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 "channel.h"
#include "client.h"
#include "match.h"
#include "ircd.h"
#include "numeric.h"
#include "send.h"
#include "msg.h"
#include "modules.h"
#include "parse.h"
#include "hash.h"
#include "packet.h"
#include "s_serv.h"
#include "s_conf.h"
#include "hook.h"
#include "messages.h"

static const char description[] = "Provides the REMOVE command, an alternative to KICK";

static void m_remove(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static void remove_quote_part(hook_data_privmsg_channel *);

unsigned int CAP_REMOVE;
static char part_buf[REASONLEN + 1];

struct Message remove_msgtab = {
	"REMOVE", 0, 0, 0, 0,
	{mg_unreg, {m_remove, 3}, {m_remove, 3}, {m_remove, 3}, mg_ignore, {m_remove, 3}}
};

mapi_clist_av1 remove_clist[] = { &remove_msgtab, NULL };
mapi_hfn_list_av1 remove_hfnlist[] = {
	{ "privmsg_channel", (hookfn) remove_quote_part },
	{ NULL, NULL }
};
mapi_cap_list_av2 remove_cap_list[] = {
	{ MAPI_CAP_SERVER, "REMOVE", NULL, &CAP_REMOVE },
	{ 0, NULL, NULL, NULL }
};

DECLARE_MODULE_AV2(remove, NULL, NULL, remove_clist, NULL, remove_hfnlist, remove_cap_list, NULL, description);

static void
m_remove(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
	struct membership *msptr;
	struct Client *who;
	struct Channel *chptr;
	int chasing = 0;
	char *comment;
	const char *name;
	char *p = NULL;
	const char *user;
	static char buf[BUFSIZE];

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

	*buf = '\0';
	if((p = strchr(parv[1], ',')))
		*p = '\0';

	name = parv[1];

	chptr = find_channel(name);
	if(chptr == NULL)
	{
		sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL, form_str(ERR_NOSUCHCHANNEL), name);
		return;
	}

	if(!IsServer(source_p))
	{
		msptr = find_channel_membership(chptr, source_p);

		if((msptr == NULL) && MyConnect(source_p))
		{
			sendto_one_numeric(source_p, ERR_NOTONCHANNEL,
					   form_str(ERR_NOTONCHANNEL), name);
			return;
		}

		if(get_channel_access(source_p, chptr, msptr, MODE_ADD, NULL) < CHFL_CHANOP)
		{
			if(MyConnect(source_p))
			{
				sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
					   me.name, source_p->name, name);
				return;
			}

			/* If its a TS 0 channel, do it the old way */
			if(chptr->channelts == 0)
			{
				sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
					   get_id(&me, source_p), get_id(source_p, source_p), name);
				return;
			}
		}

		/* Its a user doing a kick, but is not showing as chanop locally
		 * its also not a user ON -my- server, and the channel has a TS.
		 * There are two cases we can get to this point then...
		 *
		 *     1) connect burst is happening, and for some reason a legit
		 *        op has sent a KICK, but the SJOIN hasn't happened yet or
		 *        been seen. (who knows.. due to lag...)
		 *
		 *     2) The channel is desynced. That can STILL happen with TS
		 *
		 *     Now, the old code roger wrote, would allow the KICK to
		 *     go through. Thats quite legit, but lets weird things like
		 *     KICKS by users who appear not to be chanopped happen,
		 *     or even neater, they appear not to be on the channel.
		 *     This fits every definition of a desync, doesn't it? ;-)
		 *     So I will allow the KICK, otherwise, things are MUCH worse.
		 *     But I will warn it as a possible desync.
		 *
		 *     -Dianora
		 */
	}

	if((p = strchr(parv[2], ',')))
		*p = '\0';

	user = parv[2];		/* strtoken(&p2, parv[2], ","); */

	if(!(who = find_chasing(source_p, user, &chasing)))
	{
		return;
	}

	msptr = find_channel_membership(chptr, who);

	if(msptr != NULL)
	{
		if(MyClient(source_p) && IsService(who))
		{
			sendto_one(source_p, form_str(ERR_ISCHANSERVICE),
				   me.name, source_p->name, who->name, chptr->chname);
			return;
		}

		if(MyClient(source_p))
		{
			hook_data_channel_approval hookdata;

			hookdata.client = source_p;
			hookdata.chptr = chptr;
			hookdata.msptr = msptr;
			hookdata.target = who;
			hookdata.approved = 1;
			hookdata.dir = MODE_ADD;	/* ensure modules like override speak up */

			call_hook(h_can_kick, &hookdata);

			if (!hookdata.approved)
				return;
		}

		comment = LOCAL_COPY((EmptyString(parv[3])) ? who->name : parv[3]);
		if(strlen(comment) > (size_t) REASONLEN)
			comment[REASONLEN] = '\0';

		/* jdc
		 * - In the case of a server kicking a user (i.e. CLEARCHAN),
		 *   the kick should show up as coming from the server which did
		 *   the kick.
		 * - Personally, flame and I believe that server kicks shouldn't
		 *   be sent anyways.  Just waiting for some oper to abuse it...
		 */
		sendto_channel_local(who, ALL_MEMBERS, chptr,
				     ":%s!%s@%s PART %s :requested by %s (%s)",
				     who->name, who->username,
				     who->host, name, source_p->name, comment);

		sendto_server(client_p, chptr, CAP_REMOVE, NOCAPS,
			      ":%s REMOVE %s %s :%s",
			      use_id(source_p), chptr->chname, use_id(who), comment);
		sendto_server(client_p, chptr, NOCAPS, CAP_REMOVE,
			      ":%s KICK %s %s :%s",
			      use_id(source_p), chptr->chname, use_id(who), comment);

		remove_user_from_channel(msptr);
	}
	else if (MyClient(source_p))
		sendto_one_numeric(source_p, ERR_USERNOTINCHANNEL,
				   form_str(ERR_USERNOTINCHANNEL), user, name);
}

static void
remove_quote_part(hook_data_privmsg_channel *data)
{
	if (data->approved || EmptyString(data->text) || data->msgtype != MESSAGE_TYPE_PART)
		return;

	rb_strlcpy(part_buf, "\"", sizeof(part_buf) - 1);
	rb_strlcat(part_buf, data->text, sizeof(part_buf) - 1);
	rb_strlcat(part_buf, "\"", sizeof(part_buf));

	data->text = part_buf;
}
Commit	Line	Data
925c50ef AC	1	/*
	2	* ircd-ratbox: A slightly useful ircd.
	3	* m_kick.c: Kicks a user from 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
925c50ef AC	23	*/
	24
	25	#include "stdinc.h"
	26	#include "channel.h"
	27	#include "client.h"
	28	#include "match.h"
	29	#include "ircd.h"
	30	#include "numeric.h"
	31	#include "send.h"
	32	#include "msg.h"
	33	#include "modules.h"
	34	#include "parse.h"
	35	#include "hash.h"
	36	#include "packet.h"
	37	#include "s_serv.h"
	38	#include "s_conf.h"
	39	#include "hook.h"
bd0d352f	40	#include "messages.h"
925c50ef	41
eeabf33a	42	static const char description[] = "Provides the REMOVE command, an alternative to KICK";
925c50ef	43
3c7d6fcc	44	static void m_remove(struct MsgBuf , struct Client , struct Client , int, const char *);
a69c4f8c	45	static void remove_quote_part(hook_data_privmsg_channel *);
925c50ef	46
eeabf33a EM	47	unsigned int CAP_REMOVE;
	48	static char part_buf[REASONLEN + 1];
	49
925c50ef	50	struct Message remove_msgtab = {
7baa37a9	51	"REMOVE", 0, 0, 0, 0,
925c50ef AC	52	{mg_unreg, {m_remove, 3}, {m_remove, 3}, {m_remove, 3}, mg_ignore, {m_remove, 3}}
	53	};
	54
	55	mapi_clist_av1 remove_clist[] = { &remove_msgtab, NULL };
a69c4f8c DF	56	mapi_hfn_list_av1 remove_hfnlist[] = {
	57	{ "privmsg_channel", (hookfn) remove_quote_part },
	58	{ NULL, NULL }
	59	};
c168ef18 EM	60	mapi_cap_list_av2 remove_cap_list[] = {
	61	{ MAPI_CAP_SERVER, "REMOVE", NULL, &CAP_REMOVE },
	62	{ 0, NULL, NULL, NULL }
	63	};
925c50ef	64
216d70e9	65	DECLARE_MODULE_AV2(remove, NULL, NULL, remove_clist, NULL, remove_hfnlist, remove_cap_list, NULL, description);
925c50ef	66
3c7d6fcc	67	static void
760bafda	68	m_remove(struct MsgBuf msgbuf_p, struct Client client_p, struct Client source_p, int parc, const char parv[])
925c50ef AC	69	{
	70	struct membership *msptr;
	71	struct Client *who;
	72	struct Channel *chptr;
	73	int chasing = 0;
	74	char *comment;
	75	const char *name;
	76	char *p = NULL;
	77	const char *user;
	78	static char buf[BUFSIZE];
	79
	80	if(MyClient(source_p) && !IsFloodDone(source_p))
	81	flood_endgrace(source_p);
	82
	83	*buf = '\0';
	84	if((p = strchr(parv[1], ',')))
	85	*p = '\0';
	86
	87	name = parv[1];
	88
	89	chptr = find_channel(name);
	90	if(chptr == NULL)
	91	{
	92	sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL, form_str(ERR_NOSUCHCHANNEL), name);
3c7d6fcc	93	return;
925c50ef AC	94	}
	95
	96	if(!IsServer(source_p))
	97	{
	98	msptr = find_channel_membership(chptr, source_p);
	99
	100	if((msptr == NULL) && MyConnect(source_p))
	101	{
	102	sendto_one_numeric(source_p, ERR_NOTONCHANNEL,
	103	form_str(ERR_NOTONCHANNEL), name);
3c7d6fcc	104	return;
925c50ef AC	105	}
925c50ef AC	106
3ee43bcf	107	if(get_channel_access(source_p, chptr, msptr, MODE_ADD, NULL) < CHFL_CHANOP)
925c50ef AC	108	{
	109	if(MyConnect(source_p))
	110	{
	111	sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
	112	me.name, source_p->name, name);
3c7d6fcc	113	return;
925c50ef AC	114	}
	115
	116	/* If its a TS 0 channel, do it the old way */
	117	if(chptr->channelts == 0)
	118	{
	119	sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
	120	get_id(&me, source_p), get_id(source_p, source_p), name);
3c7d6fcc	121	return;
925c50ef AC	122	}
	123	}
	124
	125	/* Its a user doing a kick, but is not showing as chanop locally
	126	* its also not a user ON -my- server, and the channel has a TS.
	127	* There are two cases we can get to this point then...
	128	*
	129	* 1) connect burst is happening, and for some reason a legit
55abcbb2	130	* op has sent a KICK, but the SJOIN hasn't happened yet or
925c50ef AC	131	* been seen. (who knows.. due to lag...)
	132	*
	133	* 2) The channel is desynced. That can STILL happen with TS
55abcbb2 KB	134	*
55abcbb2 KB	135	* Now, the old code roger wrote, would allow the KICK to
925c50ef AC	136	* go through. Thats quite legit, but lets weird things like
	137	* KICKS by users who appear not to be chanopped happen,
	138	* or even neater, they appear not to be on the channel.
	139	* This fits every definition of a desync, doesn't it? ;-)
	140	* So I will allow the KICK, otherwise, things are MUCH worse.
	141	* But I will warn it as a possible desync.
	142	*
	143	* -Dianora
	144	*/
	145	}
	146
	147	if((p = strchr(parv[2], ',')))
	148	*p = '\0';
	149
	150	user = parv[2]; /* strtoken(&p2, parv[2], ","); */
	151
	152	if(!(who = find_chasing(source_p, user, &chasing)))
	153	{
3c7d6fcc	154	return;
925c50ef AC	155	}
	156
	157	msptr = find_channel_membership(chptr, who);
	158
	159	if(msptr != NULL)
	160	{
	161	if(MyClient(source_p) && IsService(who))
	162	{
	163	sendto_one(source_p, form_str(ERR_ISCHANSERVICE),
	164	me.name, source_p->name, who->name, chptr->chname);
3c7d6fcc	165	return;
925c50ef AC	166	}
	167
	168	if(MyClient(source_p))
	169	{
	170	hook_data_channel_approval hookdata;
	171
	172	hookdata.client = source_p;
	173	hookdata.chptr = chptr;
	174	hookdata.msptr = msptr;
	175	hookdata.target = who;
	176	hookdata.approved = 1;
202d4966	177	hookdata.dir = MODE_ADD; /* ensure modules like override speak up */
925c50ef AC	178
	179	call_hook(h_can_kick, &hookdata);
	180
	181	if (!hookdata.approved)
3c7d6fcc	182	return;
925c50ef AC	183	}
	184
	185	comment = LOCAL_COPY((EmptyString(parv[3])) ? who->name : parv[3]);
	186	if(strlen(comment) > (size_t) REASONLEN)
	187	comment[REASONLEN] = '\0';
	188
	189	/* jdc
	190	* - In the case of a server kicking a user (i.e. CLEARCHAN),
	191	* the kick should show up as coming from the server which did
	192	* the kick.
	193	* - Personally, flame and I believe that server kicks shouldn't
	194	* be sent anyways. Just waiting for some oper to abuse it...
	195	*/
4b1cce65	196	sendto_channel_local(who, ALL_MEMBERS, chptr,
925c50ef	197	":%s!%s@%s PART %s :requested by %s (%s)",
deee7b43 AC	198	who->name, who->username,
deee7b43 AC	199	who->host, name, source_p->name, comment);
925c50ef AC	200
	201	sendto_server(client_p, chptr, CAP_REMOVE, NOCAPS,
	202	":%s REMOVE %s %s :%s",
	203	use_id(source_p), chptr->chname, use_id(who), comment);
	204	sendto_server(client_p, chptr, NOCAPS, CAP_REMOVE,
	205	":%s KICK %s %s :%s",
	206	use_id(source_p), chptr->chname, use_id(who), comment);
	207
	208	remove_user_from_channel(msptr);
	209	}
	210	else if (MyClient(source_p))
	211	sendto_one_numeric(source_p, ERR_USERNOTINCHANNEL,
	212	form_str(ERR_USERNOTINCHANNEL), user, name);
925c50ef AC	213	}
925c50ef AC	214
a69c4f8c DF	215	static void
	216	remove_quote_part(hook_data_privmsg_channel *data)
	217	{
a69c4f8c DF	218	if (data->approved \|\| EmptyString(data->text) \|\| data->msgtype != MESSAGE_TYPE_PART)
	219	return;
	220
49c12c23 AC	221	rb_strlcpy(part_buf, "\"", sizeof(part_buf) - 1);
	222	rb_strlcat(part_buf, data->text, sizeof(part_buf) - 1);
	223	rb_strlcat(part_buf, "\"", sizeof(part_buf));
a69c4f8c DF	224
	225	data->text = part_buf;
	226	}