[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"

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

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

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 }
};

static int
modinit(void)
{
	CAP_REMOVE = capability_put(serv_capindex, "REMOVE", NULL);

	return 0;
}

static void
moddeinit(void)
{
	capability_orphan(serv_capindex, "REMOVE");
}

DECLARE_MODULE_AV1(remove, modinit, moddeinit, remove_clist, NULL, remove_hfnlist, "$Revision: 3317 $");

static int
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 0;
	}

	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 0;
		}

		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 0;
			}

			/* 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 0;
			}
		}

		/* 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 0;
	}

	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 0;
		}

		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 0;
		}

		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(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);

	return 0;
}

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 AC	41
925c50ef AC	42	unsigned int CAP_REMOVE;
a69c4f8c	43	static char part_buf[REASONLEN + 1];
925c50ef	44
760bafda	45	static int m_remove(struct MsgBuf , struct Client , struct Client , int, const char *);
a69c4f8c	46	static void remove_quote_part(hook_data_privmsg_channel *);
925c50ef AC	47
925c50ef AC	48	struct Message remove_msgtab = {
7baa37a9	49	"REMOVE", 0, 0, 0, 0,
925c50ef AC	50	{mg_unreg, {m_remove, 3}, {m_remove, 3}, {m_remove, 3}, mg_ignore, {m_remove, 3}}
	51	};
	52
	53	mapi_clist_av1 remove_clist[] = { &remove_msgtab, NULL };
a69c4f8c DF	54	mapi_hfn_list_av1 remove_hfnlist[] = {
	55	{ "privmsg_channel", (hookfn) remove_quote_part },
	56	{ NULL, NULL }
	57	};
925c50ef AC	58
	59	static int
	60	modinit(void)
	61	{
63b9db96	62	CAP_REMOVE = capability_put(serv_capindex, "REMOVE", NULL);
925c50ef AC	63
	64	return 0;
	65	}
	66
	67	static void
	68	moddeinit(void)
	69	{
	70	capability_orphan(serv_capindex, "REMOVE");
	71	}
	72
a69c4f8c	73	DECLARE_MODULE_AV1(remove, modinit, moddeinit, remove_clist, NULL, remove_hfnlist, "$Revision: 3317 $");
925c50ef AC	74
925c50ef AC	75	static int
760bafda	76	m_remove(struct MsgBuf msgbuf_p, struct Client client_p, struct Client source_p, int parc, const char parv[])
925c50ef AC	77	{
	78	struct membership *msptr;
	79	struct Client *who;
	80	struct Channel *chptr;
	81	int chasing = 0;
	82	char *comment;
	83	const char *name;
	84	char *p = NULL;
	85	const char *user;
	86	static char buf[BUFSIZE];
	87
	88	if(MyClient(source_p) && !IsFloodDone(source_p))
	89	flood_endgrace(source_p);
	90
	91	*buf = '\0';
	92	if((p = strchr(parv[1], ',')))
	93	*p = '\0';
	94
	95	name = parv[1];
	96
	97	chptr = find_channel(name);
	98	if(chptr == NULL)
	99	{
	100	sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL, form_str(ERR_NOSUCHCHANNEL), name);
	101	return 0;
	102	}
	103
	104	if(!IsServer(source_p))
	105	{
	106	msptr = find_channel_membership(chptr, source_p);
	107
	108	if((msptr == NULL) && MyConnect(source_p))
	109	{
	110	sendto_one_numeric(source_p, ERR_NOTONCHANNEL,
	111	form_str(ERR_NOTONCHANNEL), name);
	112	return 0;
	113	}
	114
3ee43bcf	115	if(get_channel_access(source_p, chptr, msptr, MODE_ADD, NULL) < CHFL_CHANOP)
925c50ef AC	116	{
	117	if(MyConnect(source_p))
	118	{
	119	sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
	120	me.name, source_p->name, name);
	121	return 0;
	122	}
	123
	124	/* If its a TS 0 channel, do it the old way */
	125	if(chptr->channelts == 0)
	126	{
	127	sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
	128	get_id(&me, source_p), get_id(source_p, source_p), name);
	129	return 0;
	130	}
	131	}
	132
	133	/* Its a user doing a kick, but is not showing as chanop locally
	134	* its also not a user ON -my- server, and the channel has a TS.
	135	* There are two cases we can get to this point then...
	136	*
	137	* 1) connect burst is happening, and for some reason a legit
55abcbb2	138	* op has sent a KICK, but the SJOIN hasn't happened yet or
925c50ef AC	139	* been seen. (who knows.. due to lag...)
	140	*
	141	* 2) The channel is desynced. That can STILL happen with TS
55abcbb2 KB	142	*
55abcbb2 KB	143	* Now, the old code roger wrote, would allow the KICK to
925c50ef AC	144	* go through. Thats quite legit, but lets weird things like
	145	* KICKS by users who appear not to be chanopped happen,
	146	* or even neater, they appear not to be on the channel.
	147	* This fits every definition of a desync, doesn't it? ;-)
	148	* So I will allow the KICK, otherwise, things are MUCH worse.
	149	* But I will warn it as a possible desync.
	150	*
	151	* -Dianora
	152	*/
	153	}
	154
	155	if((p = strchr(parv[2], ',')))
	156	*p = '\0';
	157
	158	user = parv[2]; /* strtoken(&p2, parv[2], ","); */
	159
	160	if(!(who = find_chasing(source_p, user, &chasing)))
	161	{
	162	return 0;
	163	}
	164
	165	msptr = find_channel_membership(chptr, who);
	166
	167	if(msptr != NULL)
	168	{
	169	if(MyClient(source_p) && IsService(who))
	170	{
	171	sendto_one(source_p, form_str(ERR_ISCHANSERVICE),
	172	me.name, source_p->name, who->name, chptr->chname);
	173	return 0;
	174	}
	175
	176	if(MyClient(source_p))
	177	{
	178	hook_data_channel_approval hookdata;
	179
	180	hookdata.client = source_p;
	181	hookdata.chptr = chptr;
	182	hookdata.msptr = msptr;
	183	hookdata.target = who;
	184	hookdata.approved = 1;
202d4966	185	hookdata.dir = MODE_ADD; /* ensure modules like override speak up */
925c50ef AC	186
	187	call_hook(h_can_kick, &hookdata);
	188
	189	if (!hookdata.approved)
	190	return 0;
	191	}
	192
	193	comment = LOCAL_COPY((EmptyString(parv[3])) ? who->name : parv[3]);
	194	if(strlen(comment) > (size_t) REASONLEN)
	195	comment[REASONLEN] = '\0';
	196
	197	/* jdc
	198	* - In the case of a server kicking a user (i.e. CLEARCHAN),
	199	* the kick should show up as coming from the server which did
	200	* the kick.
	201	* - Personally, flame and I believe that server kicks shouldn't
	202	* be sent anyways. Just waiting for some oper to abuse it...
	203	*/
	204	sendto_channel_local(ALL_MEMBERS, chptr,
	205	":%s!%s@%s PART %s :requested by %s (%s)",
deee7b43 AC	206	who->name, who->username,
deee7b43 AC	207	who->host, name, source_p->name, comment);
925c50ef AC	208
	209	sendto_server(client_p, chptr, CAP_REMOVE, NOCAPS,
	210	":%s REMOVE %s %s :%s",
	211	use_id(source_p), chptr->chname, use_id(who), comment);
	212	sendto_server(client_p, chptr, NOCAPS, CAP_REMOVE,
	213	":%s KICK %s %s :%s",
	214	use_id(source_p), chptr->chname, use_id(who), comment);
	215
	216	remove_user_from_channel(msptr);
	217	}
	218	else if (MyClient(source_p))
	219	sendto_one_numeric(source_p, ERR_USERNOTINCHANNEL,
	220	form_str(ERR_USERNOTINCHANNEL), user, name);
	221
	222	return 0;
	223	}
	224
a69c4f8c DF	225	static void
	226	remove_quote_part(hook_data_privmsg_channel *data)
	227	{
a69c4f8c DF	228	if (data->approved \|\| EmptyString(data->text) \|\| data->msgtype != MESSAGE_TYPE_PART)
	229	return;
	230
49c12c23 AC	231	rb_strlcpy(part_buf, "\"", sizeof(part_buf) - 1);
	232	rb_strlcat(part_buf, data->text, sizeof(part_buf) - 1);
	233	rb_strlcat(part_buf, "\"", sizeof(part_buf));
a69c4f8c DF	234
	235	data->text = part_buf;
	236	}